It was a time_______ the killer whales helped the whalers catch the baleen whales.
| A．when | B．that | C．then | D．which |
相关试题
------ _______ the letter _______ to Mr Black?
----- No．It’s still on the desk．
| A．Has; given | B．Will; be given | C．Was; given | D．Has; been given |
------Why can she keep such a good figure?
------ She _________ great importance to regular exercise．
| A．awards | B．attracts | C．attaches | D．applies |
Safety in school has be
en of great concern because of frequent reports about accidents _______ students got injured or killed while in school．
| A．in which | B．when |
| C．that | D．for which |
In order to continue to learn by ourselves after leaving school, we must______ learn how to study in the school now．
A．after all B
．in all C．above all D．at all
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