__________ you may go or stay, at least wait until you get the letter.
A.If B.Unless C.Whether D.Although
Of all subjects, chemistry seems to be __________ for me to master.
A.so difficult B.too difficult C.more difficult D.the most difficult
In the past five years, the Belt and Road has __________ many nations a great chance to communicate with each other.
A.offered B.supported C.included D.directed
I can hardly make a __________ on how to deal with this problem.
A.suggestion B.condition C.decision D.attention
--Which of the two sweaters will you take?
--I’ll take _____. They look nearly the same, and I just need one.
A.both B.either C.none D.all
Linda is not good at Chinese, but she passed the exam __________ the help of her classmates.
A.under B.without C.with D.by
