She spent a happy afternoon       her coins and stamps she had collected those years.
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A
to look for
B
worked on
C
sorting out
D
watch over
推荐题目
The town’s drinking-water _____ with prim chemicals at present.
#104183
A
contaminates
B
is contaminated
C
is being contaminated
D
has been contaminated
By the time he arrives in Beijing, we ______ here for two days.
#100865
A
will have stayed
B
will be staying
C
have been staying
D
have stayed
 —What do you think of his speech at the court?—Er..., sorry, I ________ about something else.
#100343
A
had thought
B
thought
C
was thinking
D
have been thinking