—Did you enjoy your holiday?—Yes, it’s the best holiday I ________ these years. 
#104759
A
had
B
have had
C
had had
D
would have
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Liu Ming is said         abroad for one year before he came to teach in our school.
#103093
A
to have studied
B
to study
C
to be studying
D
to have been studying
--Why does the lake smell terrible? -- Because a large amount of water_______.
#99621
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
---Shall I go to the party tomorrow? ---I would rather _____.
#103056
A
come
B
should come
C
would come
D
came