Life on Mars will be better than life on Earth __________many ways.
A. on B. in
C. at D. for
－_________I have a try on this pair of boot ? －Yes，you _________．
A．Can；could B．May；may
C．Can；might D．May；could
This is a big class，and _________of the students _________boys．
A．two-third；are B．second-there; is
C．two-thirds；are D．two-three：is
Spacecraft can travel ______the speed of light .
A. for B. on
C. in D. at
In 2100, people will by robots.
A. cared for B. be looked
C. be cared for D. take care of
I wonder ___________ from Beijing next week.
A. whether will Tim returnB. whether Tim will return
C. if will Tim returnD. if Tim returns
