Jenny, I have two tickets for today’s dolphin show, do you want to go with me — , but I’ve already planned to see my doctor.

Does your mother often go shopping at weekends—Yes, she ______.

The new CD ________ so well that it _______ out in all the shops.

The headmaster didn’t make _____clear when and where the sports meeting would be held.[ ]

Overpopulation is a terrible threat to the human race.Yet it is probably ____ a threat to the human race than environmental destruction.