Eddie has lived here _____________four years ago.
#58440
A
before
B
after
C
when
D
since
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Students should _______ to smoke.   
#58541
A
not be allowed
B
be not allowed
C
not allow
D
be allowed
---When did you return to China?---_________________.
#56057
A
Until next week
B
Not until next week
C
a few days ago
D
for a few weeks