“What do you think of them?” “I don’t know _____ is better, so I’ve taken _____ of them.”
A. what, both B. what, none
C. which, both C. which, none
It was the third time this term that the teacher________with the naughty student.
| A．had talked | B．have talked | C．talked | D．talk |
When he turned professional at the age of 11，Mike________to become a world champion by his coach and parents.
| A．expected | B．was expecting |
| C．was expected | D．would he expected |
Although medical science________control over several dangerous diseases，what worries us is that some of them are recurrent.
| A．achieved | B．has achieved |
| C．will achieve | D．had achieved |
—What's the party like?
—Wonderful.It's years________I enjoyed myself so much.
| A．after | B．when | C．before | D．since |
________a certain doubt among the people as to the practical value of the project.
| A．It has | B．They have |
| C．It remains | D．There remains |