—Can Frank come to your birthday party?—I'm not sure ________ he can come here or not, because he's busy
A. until
B. that
C. whether
D. when
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The car is ________expensive ________ few people can afford it.
A. too; to
B. such; that
C. so; that
D. very; that
He borrowed some money ________ he could send his child to school.
A. which
B. in order to
C. so that
D. because
He can neither speak________read English.
A. or
B. nor
C. and
D. but
Tom has been in the factory________he left school.
A. after
B. since
C. while
D. until
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