How long is it ________ we last had a picnic together?
A．until B．before C．that D．since
The wings of the plane are ______ of its body．
A．more than the length twice B．twice more than the length
C．more than twice the length D．more twice than the length
His best-known work that is ___ all praise can be seen in the museum．
A．with B．beyond C．without D．within
Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply．
A．when B．that C．so that D．where
For most Americans, their 18th birthday the end of one part of their life and beginning of another．
A．predicts B．tells C．marks D．signs
It ______ heavily when he got back home for he was wet all over．
A．was raining B．must have been raining
C．must be raining D．rained
