---Has Jack finished painting the picture yet?--- I’ve no idea. But he______ it the whole afternoon.
#39539
A
was painting
B
painted
C
had painted
D
have painted
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—China develops so fast.— That’s true. It ______ a lot already. 
#40170
A
changes
B
changed
C
will change.
D
has changed.
We will go on a trip if it______tomorrow.
#39799
A
won’t rain
B
doesn’t rain
C
rains
D
will rain
. The train _____ for twenty minutes.
#41504
A
left
B
has left
C
is leaving
D
has been away
While Suzy ______ on the sofa, the phone rang.
#41877
A
was sleeping
B
slept
C
sleeps
D
is sleeping