【例1】用所给词的适当形式填空
1. It's
2. It is
【答案】1. unusual;usually;usual 2. useful;use
1. It's
unusual
for Tom to be late, because he usually
follows his usual
habit of leaving home early. (usual)2. It is
useful
to learn English because you can use
it to communicate with foreigners. (use)【答案】1. unusual;usually;usual 2. useful;use
答案
1. unusual;usually;usual
2. useful;use
2. useful;use
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