---You look unhappy, what’s happening, my son?
---I’m wondering how long it’ll be________ we come to China again.
| A.since | B.when | C.before | D.after |
Professor Lee is considering going to teach in our school, where he can get paid ________.
| A.as five times much | B.as much five times |
| C.much as five times | D.five times as much |
About 110 million people moved to this city. The population is ____________ as ten years ago.
| A.as twice large | B.twice as large | C.as many twice | D.twice as many |
The house they are living now is ______ our house.
| A.twice the size as | B.the size twice of |
| C.twice as the size of | D.twice the size of |
________ the past, leaving the sadness behind, _____ you’ll see the door of a new bright world open before you.
| A.Forget; and | B.Forgetting; and | C.Forget; / | D.To forgetting; / |
It is a good plan in theory, but it _____ to be seen whether it works in practice.
| A.keeps | B.stays | C.stands | D.remains |
Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
| A.since | B.after | C.before | D.when |
It was some time _______ I realized the truth.
| A.that | B.when | C.before | D.since |