用所给动词的正确形式填空，将其答案写在横线上。
⑴               (be)there a lot of meat on the plate?
⑵The lion            (bite)the net with his sharp teeth, but that did not help.
⑶Who            (want) to be a writer?
⑷Joe wants to find out about            (skate)on the Internet .
⑸We mustn’t               (cross) the road when the traffic light is red.