Pollution is a serious problem. Scientists have _______ some good ways to save it.
A. come up with B. come on C. come out D. come up
We can’t put off _____ a plan .
A.make B. to make C.making D. to making
I saw him when I passed by.
A.ranB. to runC.runsD.running
Some people plan to ______ a volunteer project to help the disabled children.
A. put up B. think up C. set up D. cheer up
You should look after ,classmates.
A.yourselvesB.yourselfC.herselfD.himself
My father likes tea nothing in it.
A.ofB.withoutC.withD.have
