What? Is it the first time that this _________?
| A．happened | B．has happened | C．had happened | D．happens |
The meeting began two hours ago and because no decision _______, we will continue our discussion tomorrow.
| A．has made | B．has been made | C．had made | D．had been made |
I had been working on math for the whole afternoon and the numbers ________ before my eyes.
| A．swim | B．swam | C．swimming | D．had swum |
----Are you a teacher?
----No, but I ______ in Harbin No. 3 High School for 3 years.
| A． had taught | B．has taught | C．teach | D．taught |
—Ann is in hospital.
—Oh, really? I ________ know. I ________ go and visit her.
| A．didn't; am going to | B．didn't; will | C．don't; will | D．don't; would |
By the time I see you again, I _______ from that school.
| A．have graduated | B．graduated | C．will have graduated | D．graduate |
A new kind of drug ___ ___ to cure H7N9 bird flu by the scientists and they are hopeful that they will succeed in a couple of weeks.
| A．has been developed | B．is being developed | C．is developing | D．has developed |
Yangzhou high school ___________ since 1902.
| A．has come into existence | B．has been existed | C．has been in existence | D．began to exist |
By the time Jack returned home from England, his son _______ from college.
| A．graduated | B．has graduated | C．had been graduating | D．had graduated |
Do you think that bridge _________2,000 metres long? It doesn’t appear so long.
| A．measures | B．is measured | C．has been measured | D．is measuring |