Tìm 3 số x, y, z Biết rằng 2x=y/5 và x+y-(z/2)=-20

1.   I (be )  was at my relatives yesterday. was

2.   You (be) __________________ at Ba’s house tonight.were

3.   She (be) __________________ after her cat.  was

4.   We (be) __________________ doctors ten years ago. were

5.   They (be) __________________ teachers next year. were

6.   You (be not ) __________________ at school yesterday. Were not = weren’t

7.   He (be)___________a lot of photos.was

8.   We (be not) __________________ doctors last year.weren’t

9.   They (be not) -------------teachers a year ago.weren’t

10.                   Na (be) _____________a good girl last year. was

11.                   Na and Nga (be) ___________students soon. were

12.                   My friend (be) _____________ a good child some day. was

13.                   Your friends (be) ________ in Long Giang a year ago.  were

14.                   My teacher (be)  was  in Long Dien B last year.

15.                   Her teachers (be) were at school last Saturday.

16.                   Na (be not) was not a good girl yesterday.

17.                   Na and Nga (be not) weren’t students.

18.                   My friend (be not) wasn’t a good child.

19.                   Your friends (be not) weren’t in Long Giang.

20.                   My teacher (be not) wasn’t in Long Dien B.

21.                   Her teachers (be not) weren’t at school.

22.                   Was Na (be)  a good girl?

23.                   Were Na and Nga (be) students?

24.                   Was my friend (be) a good child?

25.                   Were your friends (be) in Long Giang?

26.                   Was my teacher (be) in Long Dien B?

27.                   Were her teachers (be) at school?

28.                   Were  you a student last year?

29.                   Nam (be)  was a good student two years ago.

30.                   I (want) wanted to stay home last summer.