The operation room in every hospital has to ______ bacteria of any kind.
#68453
A
keep free from
B
make it free from
C
be made free from
D
be kept free from
推荐题目
I’m sorry I'll have to ___ your present.
#83471
A
turn off
B
turn out
C
turn over
D
turn down
After the show, the crowd _____ out of the theater.
#84262
A
poured
B
melted
C
drew
D
dismissed
It took ______ people as well as ______ time to build the pyramid.
#67869
A
a large number of; a great many
B
a great many; a large amount of
C
a great many of; large amounts of
D
a large amount of; a great deal of