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
