---Why are you busy these days?-- I am writing a book.
#56484
A
since
B
as
C
for
D
because
推荐题目
Some physics problems in this book are _________difficult for the students _________work out.
#55219
A
so; that
B
not; but
C
such; that
D
too; to
Look! There is a girl __________ the music over there.
#55985
A
dancing to
B
dances to
C
dance to
D
dancing with
My Green is well known all over the town._____he goes,there’s somebody who knows him.
#55498
A
However
B
Whenever
C
Wherever
D
Whatever