After climbing the hills in the natural park for hours, my legs _   under me and I failed to keep pace with others.
#64311
A
gave out
B
gave up
C
gave in
D
gave away
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It won’t work:,it’s a bad idea,and secondly it’ll cost too much.
#80775
A
above all
B
to begin with
C
first of all
D
at first
 Who can ______ me a ball-pen ________?
#81427
A
save; to write
B
borrow; to be written
C
spare; to write with
D
spend; writing with
His girlfriend _____a singer. 
#83286
A
has turned
B
grew
C
has become
D
turned