A man does not know the difficulty of anything _______ he does it personally.
#31477
A
although
B
if
C
because
D
unless
推荐题目
--Haven't you seen Mr. Wilson at the lecture? --Yes, but he had left _________ I could ask him any questions.
#31720
A
when
B
before
C
after
D
as
It remains to be seen ________ this plan is practical enough to keep the project going.
#30340
A
whether
B
how
C
where
D
when
We didn’t know you were in trouble at that time, _______ we would have given you a hand.
#31581
A
therefore
B
unless
C
otherwise
D
so
_____ the car is in good condition ,I don't care about the price.
#80126
A
If only
B
Unless
C
As long as
D
While
---May I borrow your book Steve Jobs ? --- ________ you return it before Friday.
#30658
A
If only
B
Unless
C
On condition that
D
Now that