mwil
9. If you (A)look careful at a tree that is right in the middle of a forest, you (c)may be
able to notice that many of the insects on the tree are exactly the same color (D)as the
tree trunk.
10. Don't sit on (A)that chair, please. I've just (B)repaired the (c)leg and it still (o)be not very
safe.
11. (A) The audience enjoyed the music at the concert (B)during sitting (con the lawn under
(D)the summer sky.
12. Malaysia is a country (A)in a tropical area, (B)which the leaves (c)never change (D)colors.