A.I have a cold. I should go to see a doctor. |
B.I have a cold. I should have a rest. |
A.We went to the Big Ben. |
B.We went to the Great Wall. |
A.do | B.did | C.does |
A.am not | B.wasn’t | C.didn’t |
A.are, were | B.were, are | C.was, are |
A.with | B.on | C.about |
A.do | B.did | C.does |
A.How | B.What | C.What's |
A.on | B.in | C.at |