A. whatever B. whichever C. whenever
D. wherever
7.It doesn’t matter _____ you pay by cash or credit card in this
store.
A. how B. whether C. what D. why
8.. Everyone in the village is very friendly. It doesn’t matter ___
you have lived there for a short or a long time.
A. why B. how C. whether D. when
9.It doesn’t matter ____ you turn right or left at the crossing—
both roads lead to the park.
A. whether B. how C. if D. when
10. It suddenly occurred to him ___ he had left his keys in the
office.
A. whether B. where C. which D. that
11. The newcomer went to the library the other day and searched
for _____ he could find about Mark Twain.
A. wherever B. however C. whatever D. whichever
12. Scientists study ____ human brains work to make
computers.
A. when B. how C. that D. whether
13.I made a promise to myself ____ this year, my first year in
high school, would be different.