—Hi, Jim! Will you come to join us for a picnic this weekend?— ________ What shall I bring?
20. _______, English is one of the most important subjects.
19. At that time, people_____early in the morning in winter, and coal them warm.
18. When Tom woke up, he found himself_______in bed, with his bag beside him.
17. They don’t think advertisements are useful for our daily life, .
16. He hasn’t come yet. What do you think__________to him?