So far I ________ to Beijing.
A. had gone
B. did go
C. have been
D. has been
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It is just nine o'clock. The plane__________five minutes ago.
A. had taken off
B. has taken off
C. took off
D. takes off
Copernicus maintained that the earth _________round the sun.
A. moved
B. moves
C. has moved
D. is moved
You cannot find your tickets. I think _________.
A. you left them on the table
B. you had left them on the table
C. you did left them on the table
D. you leave them on the table
He told me he _______ the Party in 1940.
A. had joined
B. joined
C. was joined
D. is joined
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