Many factories poured out dirty water and polluted the Pearl River.
A. made ... clean
B. made ... full
C. made ... dirty
I go home __ __5:30 Sunday afternoon.
| A．at; on | B．at; in | C．at ;at | D．in;/ |
Mr. Wu is good ____ math. He teaches _____ math well.
| A．for; our | B．at; our | C．with ;our | D．at ;us |
Thanks for _____ me.
| A．helping | B．to help | C．help | D．helps |
_________ the classmates’ help, we won the basketball final at last.
| A．To | B．With | C．For | D． Under |
He is very serious. No one can make him___.
| A．laugh | B．laughs | C．to laugh | D．laughing |