1.He is trying to (improve)_his English so that he can pass TOEFL.
2.Open the windows,please.Let some( fresh) air in.
3.They set out to make a (trip) to the Great Wall by
4.Tom was born on( February )20th,1980.
5.Although she was not feeling well that morning,she
went to school (instead) of staying at home.
6.December is the (twelfth) month of the year.
7.I'm very (thirsty) .Please give me some water to
8.You can't attend the meeting (without) invitation.
9.The doctor saved many people's (lives).
10.When you are (introduced)to another person,you should usually say"How do you do?"
11.Though what he said (sounded) reasonable,yet it was
12.It's very nice of you to help me (with)my English.
13.Hangzhou is (famous) for the West Lake.
14.As a student,it is bad (manner) to come late to class.
15.He got (lost) in the forest and couldn't find his way back home.
16.At the age of eighteen,Newton went to the Cambridge
(university) to study maths.
17.I'm busy (doing) my homework now,don't trouble me.
18.It was hot in (summer),cold in winted and wet on rainy days here.
19.The child is (missing),The police are still looking for him.
20.After (finishing) his homework,he went out.