---Do you know about a very popular toy--- the yo-yo(悠悠球)?
---Yes. Filipinos(菲律宾人) invented it ________ accident. And it ________ helping kill animals.
A. at; used to B. on; was used to
C. by; used for D. by; was used for
To make our city more beautiful, a large number of trees ________ in the mountains last year.
A. was planted B. were planted
C. are planted D. is planted
---Our hometown develops so fast.
---That’s true. Great changes ________ there in the past few years.
A. happened B. took place
C. were happened D. have taken place
---Mario used to be short, didn’t he?
---________. But now he is tall.
A. Yes, he didn’t B. No, he did
C. Yes, he did D. No, he didn’t
---Do you know if we ________ a picnic next week?
---I’m not sure. But if it ________ raining, maybe we will.
A. have; will stop B. have; stops
C. will have; stops D. will have; will stop
Lily has ________ homework and she really doesn’t know ________ first.
A. much too; what to do B. too much; to do what
C. much too; to do what D. too much; what to do
