_____ a certain doubt among the workers as to whether he could finish the task in a short time.
15. When Madam Curie did the experiment again, she was more careful where she _____ a mistake.
14. ----Excuse me. Could you tell me the way to the nearest bank? ----___straight on and you’ll see a cinema on your right. Then the next building will be the bank.
13. ----Angelia looks blue today. ----Yes, but she won’t say _____ bothers her.
12. The Summer Palace is really beautiful. In fact I doubt whether China has _____ park.
11. ----_____ he have been chosen as captain of our school football team? ----Yes, he _____. Can’t you see he’s wearing an armband (袖标)?