The company had about 20 notebook computers but only one third _________ used regularly.
Now we have sixty working all day long.
| A．is | B．are | C．was | D．were |
Michael __________ here to see you and he____________ a note on your desk.
| A．has come; had left |
| B．has been; has left |
| C．has come; left |
| D．has been; left |
--How long ___________ each other before they__________ married?
--For about a year.
| A．have they known;get |
| B．did they know; were going to get |
| C．do they know;are going to get |
| D．had they known; got |
It is a rule in his family that __________ comes home earlier should cook the dinner for the family.
| A．anybody | B．who | C．who that | D．whoever |
The black horse is___________ of the pair.
| A．the strongest | B．the stronger |
| C．the strong | D．quite strong |
I coutdn't have got to the meeting on time____________ an earlier train.
| A．if I had not caught | B．unless I had caugh |
| C．if ! did not catch | D．unless I caugh |