Joan saw her boyfriend off at the railway station. She waved until the train was  _____.
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A
in sight
B
out of sight
C
at first sight
D
lost sight
推荐题目
The manager devotes all his spare time ______ the violin.
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A
to practise
B
to practicing
C
in practising
D
for practising
________ with many other people, teachers have a relatively stable income.
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A
Compare
B
To compare
C
Comparing
D
Compared
There are ________ food on sale in the trade fair.
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A
a great many
B
lots of
C
a great deal of
D
large quantities of