If we_________ sunlight_________ a dry leaf with a piece of glass, it may start burning.
#70485
A
work; out
B
carry; out
C
focus; on
D
concentrate; on
推荐题目
27.He _______reading, so he didn’t notice me when I came into the room.
#74788
A
addicted
B
addicted to
C
was addicted to
D
was addicted in
We'll go on fighting to the end. We'll never     .
#69021
A
give out
B
give away
C
give off
D
give in
We should _______ whatever is true.
#67044
A
keep up
B
settle down
C
stick to
D
team up with