If trees continue _______ at the present rate, it won’t be _______there is no trees for shade.
A.to cut down; long before | B.being cut down; before long |
C.to be cut down; long before | D.cutting down; before long |
推荐套卷
If trees continue _______ at the present rate, it won’t be _______there is no trees for shade.
A.to cut down; long before | B.being cut down; before long |
C.to be cut down; long before | D.cutting down; before long |