My parents have promised to come to see me before I _____ for Africa.
#100358
A
have left
B
leave
C
left
D
will leave
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Using a telescope we could see that something .
#102178
A
is happening
B
happened
C
would happen
D
was happening
With Chang'e-3 successfully landing, China becomes the third country in the world that _______ on the moon.
#99884
A
lands
B
has landed
C
landed
D
was landing
When I met him the other day，it was the first time we ________ each other since we were at school.
#99162
A
saw
B
had seen
C
were seeing
D
have seen
Tim ____since he lost his job three weeks ago.
#101002
A
had been unemployed
B
was unemployed
C
has been unemployed
D
has unemployed