test [(1) to attempt to learn or prove what something is like or how it will act by studying or doing; (2) an attempt to learn or prove what something is like or how it will act by studying or doing; (3) a group of questions or problems used to find out a person's knowledge] The scientists will test the new engine soon. (1) The test of the new engine takes place today. (2) The students did well on the language test. (3)
than [(1) connecting word used to link things that may be similar, but are not equal] My sister is taller than I am.
thank [to say that one has a good feeling toward another because that person did something kind] I want to thank you for helping me.
that [(1) showing the person, place or thing being spoken about; (2) the person, place or thing being spoken about] That man is a soldier. (1) The building that I saw was very large. (2)
the [used in front of a name word to show that it is a person or thing that is known about or is being spoken about] The man watched the animal run into the woods.
theater [a place where movies are shown or plays are performed] We saw a wonderful play last night at the theater.
them [other people being spoken about] Did you talk to them about the dog?
then [(1) at that time; (2) and so] We were young then. (1) If I am late then she gets angry. (2)
theory [a possible explanation of why something exists or how something happens using experiments or ideas, but which is not yet proven] Other scientists are debating his theory about the disappearance of dinosaurs.
there [(1) in that place or position; (2) to or toward that place] What did you find over there? (1) I am going there to get something to eat. (2)
these [of or about the people, places or things nearby that have been spoken about already] These are my children.
they [those ones being spoken about] They work with us on several projects.
thick [(1) having a large distance between two opposite surfaces; (2) having many parts close together; (3) almost solid, such as a liquid that does not flow easily; (4) opposite thin] The wall is two meters thick. (1) The forest is very thick. (2) He put thick oil in the motor of his old car. (3) This house paint is thick, not thin like the other paint. (4)
thin [(1) having a small distance between two opposite surfaces; (2) not fat; (3) not wide; (4) opposite thick] The walls in this house are very thin. (1) He was fat as a boy but is thin as a man. (2) The young trees are thin but will grow wide. (3) The electric wires were thin, not thick. (4)
thing [any object] Do you know what that thing is?