I don’t know who invented ________ telephone. It’s really ________ most useful invention.
| A．the; a | B．/; a | C．a; the | D．/; the |
—Look, it ____ again.
—Yeah. This is the third snow we ____ this spring.
| A．will snow; are having | B．has snowed; had had |
| C．is snowing; have had | D．snows; have had |
All attentionon the beautiful girl, the boy didn’t notice the teacher enter the classroom.
| A．focusing | B．focused | C．to focus | D．was focused |
Constant practice has erased my accent to a pointmany people think I’m a native speaker.
| A．which | B．what | C．where | D．when |
When he realized the police had seen him, the man ____ the exit as quickly as possible.
| A．made up | B．made for | C．made out | D．made off |
—I’ve decided to quit this job, but I’m afraid I won’t be able to find a better one.
—. You never know until you try.
| A．Good luck | B．Never mind | C．Forget it | D．Go for it |