-----Did you have a hard time traveling back home?
-----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.
| A．snowed, were | B．was snowing, had been |
| C．had been snowing, had been | D．had snowed, were |
The retired worker likes getting up early. The air in the morning is good ______.
| A．being breathed | B．breathing | C．to be breathed | D．to breathe |
They must have finished the work by the end of last month, ______?
| A．hadn’t they | B．mustn’t they | C．haven’t they | D．didn’t they |
— He thinks that girls are smarter than boys when it comes to learning English.
— But two years ago he thought_______.
| A．so | B．otherwise | C．opposite | D．different |
I enjoyed the part of the film ______ the boy was playing with model soldiers and suddenly they all came alive and started running across the table.
| A．where | B．when | C．which | D．whom |
Better go to see your sick colleague right now, ______ you?
| A．won’t | B．didn’t | C．don’t | D．hadn’t |