—I don’t know ______ with this problem. It’s too hard. —You can ask Mr Wang for help.
A.which to deal | B.when to deal | C.what to deal | D.how to deal |
—I don’t know ______ with this problem. It’s too hard. —You can ask Mr Wang for help.
A.which to deal | B.when to deal | C.what to deal | D.how to deal |