Mr Smith is old man and he usually walks his dog after supper.
----Do you know why he left so early?----___________ for the English test, I guess.A. Study B. Studying C. To study
There are lots of English books here, and ________ of them is easy to understand.A. all B. every C. each
The cake is delicious, and I would like ___________ one.A. a second B. the second C. second
You should do more ___________ instead of sitting at the desk busy doing your _________.A. exercise; exercises B. exercises; exercise C. exercise; exercise
______ girl who will perform at the party tomorrow comes from ______ European country.A. A; the B. The; a C. The; an