Some of the students were late for the meeting, but I can’t remember _____.
| A．what | B．when |
| C．which | D．whom |
—What were you doing when she dropped in?
—I for a while and_________ some reading.
| A．was playing; was going to do | B．played; did |
| C．had played; was going to do | D．had played; did |
If you want to see a doctor, fix the date with him ahead of time. This is a common ___________ in the USA.
A. habitB. lawC. ruleD. custom
He___________ when the bus came to a sudden stop.
| A．was almost hurt | B．was to hurt himself |
| C．was hurt himself | D．was hurting himself |
—What would you wish to do if you were a college student again?
—That's very hard to say, but I wish I___________ when I was a college student.
| A．has not studied biology | B．did study biology |
| C．had studied biology | D．studied biology |
His parents meant him_____________ scientific research, but he showed no interest and turned poet.
| A．going in for | B．to have gone in for |
| C．to go in for | D．having gone in for |