My best friend and I haven’t seen each other _________ she went to the USA 10 years ago.
A. when
B. if
C. although
D. since
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---Li Ming, are you leaving for Hangzhou for trip tomorrow?-No. It will be three days ________ I start my trip.
A. after
B. as
C. before
D. when
Many people read newspapers _________ they can learn what’s happening in the world.
A. so that
B. ever since
C. as soon as
D. even though
The teacher got angry ________ what we had done in class yesterday.
A. because
B. because of
C. as
D. but
________ you sit in front of the computer all day while working, you’d better take exercise for at least an hour every day.
A. Even if
B. Even though
C. Since
D. As if