Temperatures________ quite dramatically at night in mountains, so put on some warm clothes before going out.
| A.are dropped | B.drop |
| C.are being dropped | D.have dropped |
Canada is a country ______ many different nationalities as well as one with foreign immigrants ______ the majority of its population.
| A.consisting of; making up | B.making up of; occupied with |
| C.made up of; consisting of | D.consisted of; taking up |
.--- Where are you, Nancy?
--- Here in the sitting room, _______ to Professor Smith.
| A.is writing | B.write | C.to write | D.writing |
--- Where will you start your work after graduation?
--- Mmm, it’s not been decided yet.I _______ continue my study for a higher degree.
| A.can | B.must | C.would | D.might |
How many more decades will have to pass ____ scientists succeed in providing a cure for cancer?
| A.when | B.since | C.before | D.until |
_______ information cost him many chances of finding jobs.
| A.Lack of | B.Short of | C.Lack | D.Lacking of |