Trees make our streets__________ and__________.
A.more beautiful; less noise B.more beautifully; less noisy
C.less beautiful; more noise D.more beautiful; less noisy
Are these tigers __________ great danger?
A.of B.in C.for D.at
I know that trees can communicate __________ one another.
A.with B.on C.by D.in
_______December 11,2001, China formally became the 143rd member of the WTO
A.In B.On C.At D.Until
The son thanked his mother _________ helping him __________ his lessons and he gave his mother a kiss.
A.for…with B.with…in C.of…about D.on…at
They had to go out and hunt for food to keep themselves __________.
A.live B.life C.lives D.alive
