单项选择题

It was when he began to make the new experiment in 1908 ______ such an ambitious plan.

A．had he
B．did he have
C．that did he have
D．that he had
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单项选择题
It is unusual for there ______ so many tourists on the beach at this time of the year.
A．be
B．were
C．being
D．to be
单项选择题
______ may be said against the popular newspapers, it can hardly be argued that they are catering to readers' daydreams.
A．Whatever
B．Whichever
C．However
D．Whoever
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