---Look, the teacher is explaining something to her students again and again.
---________the teacher is!
| A．what patient | B．How patient | C．What a patient | D．How patient a |
—Mom, must I take out the trash now?
—No, you ________. You may take a rest first.
| A．mustn’t | B．can’t |
| C．shouldn’t | D．don’t have to |
—Smart phones are more and more popular now.
—So they are. But they still ________ too much.
| A．pay | B．cost |
| C．take | D．spend |
It’s very friendly ________ him to help me when I’m in trouble.
| A．of | B．with |
| C．to | D．in |
________ we deal with our problems, we can easily become unhappy.
| A．Until | B．If |
| C．Unless | D．Though |
—What do you think of your host family, Jim?
—Great. They try ________ best to make me feel at home.
| A．they | B．their |
| C．them | D．theirs |