Use the correct tense or form of the verb given.
Câu 1: We are very worried that poisonous gases (pump) _____ into the atmosphere every day.
Câu 2: If we use energy-saving bulbs, we (save) _____ a lot of money.
Câu 3: While Henry (walk) _____ in the mountain, he saw a bear.
Câu 4: I wish I (not, be) _____ an only child. It would be great to have brothers and sisters.
Câu 5: The librarian asked us (not, make) _____ so much noise.
Câu 6: John (have) _____ this bike since his eleventh birthday.
Câu 7: Tom spent three months (learn) _____ to play the piano.
Câu 8: The flowers (wrap) _____ in yellow paper are 5 dollars.
A.
B.
C.
D.