改错
1.My English is so limited that I have to keep on learning some expressions and use them.________________________________________________________
2.Don't be angry with me because not having replied to your letter.
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3.The difficulty faces us today is the supply of food to those in need.
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4.Much experience are needed to operate a computer well.
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5.We are now living in the room whose windows face the south.
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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.
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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.
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10.They looked up and saw a notice on the wall read:"No smoking!"
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11.They bought a new house but which will need a lot of work before they can move in.
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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.
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14.It never occurred me to phone you.
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15.I was prevented by illness taking the exam.
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