问题

People take naps at noon in warmer climates, ____the heat makes workdifficult in theearly afternoon[ ]

A: which
B: what
C: where
D: when

正确答案是：

同类题型

There ___________some milk and many hamburgers on the table.

It is human activities on the earth that areto _______ global warming.

Quarrels often _______ between the wife and husband but they both wish to take measures to prevent them ______ happily.

－Mom,where’s my backpack－Youshouldn’t put your things casually, you should take good care of _____ ownthings.