I’m sorry you’ve been waiting so long , but it will be an hour       David gets back .

–English is becoming so important.
–It’s true. Many university classes are taught in English _____ the native language is not English.

Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.

________ the manager has arrived, we can begin our discussion right away.

______ his timely help, Kate overcame the hardship at last.                                                                                                                                                                                                                                                                                                                                                                                                                         

He told me that he was into many sports            swimming, shooting and skating.

Many of them turned a deaf ear to his advice,        they knew it was useful.

Jane was dressed in red ______ Joe was dressed in blue.

She missed the plane, ________driving very fast to the airport.

______I understand your viewpoint, I don’t agree with it.