---May I speak to Mr. Smith? ---Sorry, he           . Can I take a message? 
#53437
A
sleeps
B
is sleeping
C
sleep
D
sleeping
推荐题目
---My brother is a basketball player. ---And he usually_____ very hard on the playground. 
#57758
A
has practiced
B
is practicing
C
practices
D
practiced
Granny often asked us _______ water in our daily life. 
#56026
A
save
B
saving
C
to save
D
saved
Reading every day can make you          .
#54984
A
became a superstar
B
getting clever
C
to have fun
D
become knowledgeable