英语四级语法200条之被动语态练习题
11) The subject of these lectures ____by the lecture committee.
A) is announced
B) have been announced
C) are announced
D) has been announced
12) I found an aspirin bottle ____dropped on the floor of David's room.
A) was
B) had
C) had been
D) is13)The goods ____when we arrived at the airport.
A) were just unloading
B) were just been unloading
C) had just unloaded
D) were just being unloaded
14) If one ____by pride, he will reject useful advice and friendly assistance.
A) overcomes
B) is overcome
C) has been overcome
D) overcome
15) Most environment problems exist because adequate measures for preventing them ____taken in the past.
A) was not
B) were not
C) were not being
D) had not been
16) You ought to have put the milk in the refrigerator, now ____sour.
A) I smell
B) it is smelt
C) it smells
D) it is smelling
17) After the race____, the celebration began.
A) had been won
B) is won
C) will be won
D)has been won
18) He was here for a little while, but I don't knowswhereshe ____now.
A) is
B) was
C) had been
D) has been
18) The young teacher has ____ competent.
A) been proved to be
B) proved to be
C) been proved
D) proved being
19) Pluto, the outermost planet of the solar system, ____photographically in March 1930.
A) discovered
B) was discovered
C) by discovery
D) when discovered
20) To get a better view of the stage, ____.
A)our seats had to be changed
B) our seats were changed
C) we had to change our seats
D) our seats were changed by us
