—How is everything going on with you in Australia?—Quite well. Not so smoothly as I hoped, _______.
30.How long do you think it will be _____ we can find a new water source?
29.High up in the mountains _____ a quiet small village, with only 20 households.
28.A heavy snow promises a good harvest, _____ is often the case.
27.After his wife died, he kept himself _____ from other people and the outside world,
26.— Why is little Jimmy so naughty today? — He is bored, so he _____ a little silly.