My grandfather is always thinking for others. In other words, he is always ____.
26. It is difficult to do some of the experiments ________ in our physics textbooks.
25. --School will soon be over. Can you recite the text now? --I’m not sure, but I ________ it all this morning.
24. Peter likes doing sports ________ his brother prefers listening to music.
23. The Chinese government has made ________ a goal to increase peasants’ income.
22. --May I speak to Professor White, please? --Sorry, he isn’t in. This is his assistant speaking. Can I help you?