题目内容
(请给出正确答案)
[单选题]
The firemen have been examining the ground()yesterday.
A.for
B.since
C.by
D.ago
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A.for
B.since
C.by
D.ago
A.didn't need to worry
B.mustn't have worried
C.needn't have worried
D.couldn't have worried
A.money
B.check
C.capital
D.card
A.To have arrived
B.To arrive
C.While arriving
D.Arriving
What type(s) of control-Newfoundland, occurrence, or feedback-do you think would have been most useful in this sinusoidal? Explain your choice(s).
A.with a level
B.at something
C.at quotation
D.with a figure
A.Since that
B.Since then
C.By now
D.Now that