The reason_________  he didn't come was _________ he had to take care of his sick mother.
#73388
A
why ; that
B
why ; which
C
which ; why
D
that ; for
推荐题目
The theory he sticks to ______ to be of no use in our studies. 
#72228
A
proves
B
prove
C
proving
D
be proved
    I could not remember the text .
#68396
A
However hard did I try
B
However hard I tried
C
However I tried
D
However had I tried hard
The man as well as his horse _________ crossed the river ________ from Tokyo.
#68838
A
which, come
B
that ,comes
C
who ,came
D
who ,come
_____ this instrument should have put its work permit number on the box.
#73281
A
Who checked
B
Whoever inspected
C
No matter who examined
D
Those who estimates