Don’t _________ the trees.
A.play
B.pick
C.climb
The two wheels ____ this bicycle were big.
A. toB. ofC. off
The old men and women are ____ Buckingham Palace.
A. inB. onC. at
The man invented this bicycle ____ 1839.
A. in B.onC. at
An _____ invented this bicycle.
A. Chinese B. American C. English
This old woman _____ have food.
A.did B. didn’tC. don’t