He was told that it would be at least three more months____ he could recover and return work
A. when
B. before
C. since
D. that
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In my opinion, life in the twenty-first century is much easier than ________.
A. that used to be
B. it is used to
C. it was used to
D. it used to be
Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest.
A. why
B. how
C. unless
D. where
Leave your key with a neighbor ___ you lock yourself out one day
As
B. Since
C. If
D. While
---Where’s that report?---I brought it to you ____you were in Mr. Black’s office yesterday.
A. if
B. when
C. because
D. before