Fresh air, enough exercise and nutritious food ______ to sound health.
#100792
A
devote
B
add
C
contribute
D
stick
推荐题目
The coal miners    in the coal mine for 10 hours before we came to their rescue.
#103310
A
had trapped
B
had been trapping
C
had been trapped
D
would have been trapped
-Why didn’t you give me a call last night?-Well, I couldn’t. My phone _____________.
#101329
A
was being repaired
B
had been repaired
C
would be repaired
D
was repaired