---There people using the Internet in the world. Do you know how many people there are?
--- It’s hard to say, because _______people increasing.
A. is a number of; the number of; is
B. are a number of; a number; is
C. is the number of; a number of; are
Maria is in the _____ office.
A .teacher B .teachers’ C. teachers
-----What time do you usually get up _____ weekdays?
-----______about six o’clock.
A .at; At B .on; To C .on; At
Work ______ first!
A. must comes B. must come C .must to come
----Oh, your new dress looks very nice!
----_______.
A. Thanks B. No, thanks C. Yes, it is
----Does she like playing ______ guitar?
-----Yes. And she likes playing _____ soccer, too.
A． the; / B. /; / C. the; the.