21. You are strongly _____ to take out medical insurance when visiting China.(advise)
22. We had _____ wait and watch for a better chance.(good)
23. It afforded _____ the opportunity to improve her tennis skills.(she)
24. I didn’t mention it because I was afraid _____ upsetting him. (of/to)
25. You will feel better _____ you take the pills.(after/before)
26. I don’t know why you’re so concerned , for it isn’t your problem ____ all.(in/after)
27. My mother is only in her early _____. (forty)
28. She was in Paris last week and in Rome the week _____.(before/ago)
29. I don’t agree _____ you _____ many things.(on/with)
30. He aimed his gun _____ the target, fired and missed it. (at/on