题目内容

They had stopped for coffee in the children's section, ______ they suddenly heard a loud noise at the next table.

A. when
B. while
C. which
D. that

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______, Rowena knew what to do, as she had completed a baby and child first aid course with American Red Cross.

A. Hopefully
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A. significant
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I'm sure all mistakes have been caught, ______ I have checked carefully.

A. because
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C. even though
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