问题补充：
改错
1.My English is so limited that I have to keep on learning some expressions and use them.
2.Don be angry with me because not having replied to your letter.
3.The difficulty faces us today is the supply of food to those in need.
4.Much experience are needed to operate a computer well.
5.We are now living in the room whose windows face the south.
6.The managers discussed the plan that they would like to see it carried out the next year.
7.It has been announced, we shall have our final exam this month.
8.She thought I was talking about her daughter, which, in fact, I was talking about my daughter.
9.The clouds moved across the moon, left us in total darkness.
10.They looked up and saw a notice on the wall read:No smoking!
11.They bought a new house but which will need a lot of work before they can move in.
12.We can learn a lot of about what a person is thinking by watching his or her body language.
13.I was still so angry that I went up to tell him how I thought of him.
14.It never occurred me to phone you.
15.I was prevented by illness taking the exam.
1.use → using 2.because → for 3.that / which ∧ faces 4.are → is 5.to∧the / the去掉 6.it去掉 7.It → As 8.which → while 9.left → leaving 10.read → reading 或 that / which read 11.which → in 12.of去掉 13.how→what 14.to∧me 15.from∧taking
答案：
(答案→)1.use → using 2.because → for 3.that / which ∧ faces 4.are → is 5.to∧the / the去掉 6.it去掉 7.It → As 8.which → while 9.left → leaving 10.read → reading 或 that / which read 11.which → in 12.of去掉 13.how→what 14.to∧me 15.from∧taking
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