______ well prepared you are, you still need a lot of luck in mountain climbing.
A. However B. WhateverC. No matter D. Although
----Did you look up the time of the high-speed trains to Shanghai?
----Yes, the early train is __________ to leave at 5:30 a.m.
A. likely B. possibleC. due D. about
There is no doubt _______ international cooperation is the key to _______ with cyber crime.
A. whether; doing B. that; dealingC. whether; do D. that; deal
Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
A. to invite B. invitingC. invite D. invited
It took me quite a long time to ________ the new environment here.
A. adapt to B. relate toC. apply to D. attach to
He made another wonderful discovery, ______ of great importance to science.
A. which I think it is B. which I think is
C. which I think D. I think which is
