Too high house prices can be brought under control, _____ the authorities introduce a series of regulatorypolicies.
A. even if
B. as if
C. so that
D. provided that
参考答案:
_____you have confidence, you will be successful in everythi..
_____you have confidence, you will be successful in everything you are interested in.A. Unless B. Once C. Whether D. Before
_____ you ask many different questions _____be able to acqui..
_____ you ask many different questions _____be able to acquire all the information you need to know.A. Unless; will you B. Unless; you will C. Only if; will you D. Only if; you will