The fact has worried people _______ the number of the deaths is still increasing.
A. what B. which C. that D. when
Either you or he _______ to give them a lecture tomorrow.
A. is B. are C. has D. have
I _______ online games for two years, but I’ve never regretted giving it up.
A. play B. was playing C. played D. had played
Many children always disagree with _______ their parents suggest.
A. however B. whatever C. whichever D. whoever
He is always telling the director how to run the business, _________ is like teaching one's grandmother how to suck eggs.
A. that B. which C. what D. as
I can’t remember how the tune goes, ______ I’ll recognize it when I hear it.
A. so B. but C. because D. unless