— What is it ______ made her upset?
— It is the missing bike.
| A．what | B．why | C．who | D．that |
I was about to get on the bus ____someone called me from behind.
| A．until | B．whether | C．while | D．when |
We won’t give up __________ we should fail 10 times.
| A．even if | B．since | C．whether | D．until |
Must I get through the business in one evening? No, you ________.
| A．mustn’t | B．haven’t | C．needn’t to | D．don’t have to |
Let’s go to a movie after work, OK?— _____________
| A．Not at all. | B．Why not? | C．Never mind. | D．What of it? |
He sat at the desk, __________ a novel.
| A．read | B．to read | C．reading | D．reads |