A.must have stayed | B.could have stayed | C.may have stayed | D.needn’t have stayed |
A.who | B.which | C.that | D.what |
A.he sent his computer | B.he drove at once |
C.his computer was sent | D.his father helped him send it |
A.gather | B.award | C.admire | D.gain |
A.which | B.that | C.what | D.as |
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