Wateriscomposed_______hydrogenandoxygen.
A
be composed of:由 …组成。句意:水是由氢与氧化合而成的。
Hisintelligencewill________himtogetascholarshiptocollege.
Decisiononwhetherthemessageisrightorwrongshouldatleastcomeafter_____whatthemessageis.
Theprofessoraskedaquestion,andDavid________agoodanswer.