—____ the workers are very tired, ____they keep on working.
— They are great. We must learn from them.
A.Because; / | B.Though; / |
C.Because; so | D.Though; but |
—Why are you so happy, today?
—Because I to London with my parents tomorrow.
A.fly | B.flew | C.am flying | D.have flown |
The computer in 1946 in America.
A.is invented | B.was invented | C.invents | D.invented |
—You praise your son. He works harder than before.
—Thanks, I will.
A.should | B.can | C.may | D.must |
Our team tried our best, we failed the match at last.
A.but | B.and | C.or | D.while |
the morning of March 31, she made an important decision in her life.
A.Since | B.In | C.From | D.On |