People have planted a lot of trees and grass in order to ____ wind and sand in the desert.
#81445
A
hold down
B
hold up
C
hold back
D
hold out
推荐题目
Rather than            boring TV shows, he always prefers             original novels
#71107
A
watch; read
B
watching; read
C
watch; to read
D
to watch; reading
Every means ______ tried but without much result.
#72742
A
has been
B
have been
C
are
D
is
How did all these _________?
#65492
A
come out
B
come up
C
come across
D
come about