Environmentalists urged that more effective measures ___________by the government to reduce the pollution.

It is uncertain ________ side effect the medicine will bring about, although about two thousandpatients have taken it.[ ]

You can _______ the bottle ______ water, Jim.

day’s homework is to write acomposition, its title is: Will we become _____ or master

Temperatures________ quite dramatically at night in mountains，so put on some warm clothes before going out