—Look! The man at the gate ________ be our teacher. He is always standing there every morning.
—No, it ________ be him. He is having a meeting in the office now.
| A．must; can’t | B．must; mustn’t |
| C．can’t; can’t | D．can; mustn’t |
He looked very confident and calm during the test, but __________ he was extremely nervous.
| A．in trouble | B．in danger | C．in reality | D．in surprise |
It was a cold winter night, and there wasn’t anyone __________the boy could turn for help in the street.
| A．that | B．which | C．whom | D．what |
___________for his good skill, this doctor has a lot of visitors calling for help all the time.
| A．Knowing | B．To know | C．Known | D．To have known |
The harder you__________, the better progress you ___________.
| A．will work | B．work; have made |
| C．work; will make | D．will work; make |
As ________matter of fact, _________ beauty of __________ nature there made an excellent impression on me.
| A．a; the; 不填 | B．a; the; the |
| C．the; the; 不填 | D．a; 不填；the |