Sarah looked at ________ finished painting with ________ satisfaction.(2012·新课标全国,22)
I never forget the day _____ we worked together and the day ____ we spent together.A when, which B which, when C what, that D on which; when
------ What do you think of the English dictionary?------Not bad. You can’t find ______ in the bookstore.
It was a time_______ the killer whales helped the whalers catch the baleen whales.
Ladies and gentlemen, please remain ______ until the plane has come to a complete stop.
_______ a certain doubt among the people as to the practical value of the project.