1. ___ is not easy
(A) For cook (B) To cooking (C)Cooking (D) Cook
2. China is a ____country
(A) developing (B) develop (C) developed (D) being developed
3. The window is ___.
(A) break (B) to break (C) breaking (C) broken
4. Things keep ___.
(A) changed (B) changing (C) being changed (D) change
5. The classroom needs____.
(A) clean (B) cleaned (C) to clean (D) cleaning
