19.It is required that in no case________ our password.( )
A. | we should forget | B. | should we forget | ||
C. | shall we forget | D. | we shall forget |
18.So seriously ____ in the accident that the driver was sent to hospital at once.( )
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A. | was he injured | B. | he was injured | C. | did he injure | D. | he did injure |