______ its size with that of the whole earth, we find the highest mountain does not seem high at all.
| A．When compared | B．Compared to |
| C．To be compared | D．Comparing |
So little _____ agree on the plan that they could not settle their difference.
| A．did they | B．do they | C．they did | D．they did not |
We were lucky enough， for no sooner _____ home _____ it rained.
| A．we returned， and | B．we had returned， when |
| C．did we return， when | D．had we returned， than |
____， he would have passed the exam.
| A．If he were to study | B．If he studied hard |
| C．Had he studied hard | D．Should he study hard |
Little wonder _____ up their hands in dismay.
| A．have some thrown | B．some have thrown | C．thrown some have | D．have thrown some |
No sooner ____ they rushed out into the street.
| A．did they hear the news than | B．did they hear the news when |
| C．had they heard the news than | D．had they heard the news when |