--How often do you attend the evening classes?
---_____, three times per week.
| A．On the whole | B．On average | C．Little by little | D．In all |
They ___ every means, but the engine __ work.
| A．tried; couldn't | B．have tried; won't | C．tried; won't | D．have tried; can’t |
The workers ___ busily when the boss came to look for something she ___ in the office.
| A．had worked; had left | B．were working; had left | C．working; had left | D．had worked; left |
Her brother___ while he ___ his big horse and had his leg broken.
| A．fell; was riding | B．fell; ride | C．had fallen; was riding | D．had fell; rode |
“There is something wrong with my bike.” “It doesn't matter. I ___ lend you mine.”
| A．am to | B．am going to | C．must | D．will |
“You ___ to think for youself , you are to carry out my orders.”
| A．don't mean | B．aren't meant | C．don't want | D．aren't wanted |