-- I have got a headache.
-- No wonder. You_________ on the math exercises too long.
A. work B. are working C. have been working D. worked
Attention, please. All of you students _______ remain in their seats until all the papers have been collected.
A. can B. will C. may D. shall
____ it rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
A. Were B. Should C. Would D. Will
Whoever is never ______ with the progress he has made will be a success.
A. content B. proud C. abundant D. familiar
Canada is a country ________ many different nationalities as well as one with foreign immigrants __________ the majority of its population.
A. making up of; occupied with B. consisting of; making up
C. made up of; consisting of D. consisted of; taking up
It wasn’t until dark _________ he found _________ he thought was the correct way to solve the problem.
A. when , that B. that , that C. when , what D. that , what
