Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.
45. —Could I borrow your digital camera, please? —Yes, of course you ________.
44. —Look!The boy is doing some washing. —He is only eight years old, but he is very ________.
43. Learning a foreign language well takes a long time, ________?
42. Many countries are increasing their use of natural gas, wind and other forms of ________.
41. —Well, it's getting late. I must be going. Thank you again for inviting me to the party. —________