1、Northern China generally receives less rain than____Southern China.
A. does B. it is C. is D.it does
2. Is this the television____you wish to have ____?
A. the one;repaired B .the one;it repaired
C .what;repaired D.which;it repaired
3. Some of the most important concepts in physics____their success to these mathematical systems.
A. apply B.owe C.oblige D.contribute
4. ____there won't make any difference.
A . Conrade Wang's going B.Conrade Wang gone
C. Conrade Wang goes D.Conrade Wang going
5.____there never be another war!
A.Must B.May C.Should D.Can