My friend Tom stays at Internet bars above 8 hours every day ______, really a netter(网虫).
A. on average B. in charge C. up close D. for free
I have many friends, _____ some are businessman.
A. of them B. from which C. who of D. of whom
____ is certain, though, is that the mystery of Tutankhamun’s tomb has never been fully explained.
A. It B. What C This D As
Some time after the rockets and the space shuttle are _____, the rocket will _____ the space shuttle and ____ the sea.
A. set sail; broadcast; drop in B. ruled out; orbit; show up
C. stepped up; survive; fall for D. launched; separate from; fall into
London people always take umbrellas with them, just _______ it rains.
A. in case B. fear C. so that D. so long as
Experts suggest that teenagers spend at least 30 minutes exercising, five times a week. Walking and riding your bike _____ , and ______.
A. counts; so are school sports B. count; school sports count, either
C. count; so do school sports D. counts; so school sports do
