bai 1) thoi gian o to di tu b den a la:99/45=2,2h

         doc duong o to nghi 25p

         vay o to den a la:5h20+2h20p+25p=8h05p

Diện tích hình vuông là:

   10 x 10 = 100 (cm²)

Độ dài đáy của hình tam giác là:

(100 x 2) :10 =20 (cm)

               ^{Đáp số:20 cm}

1/ It (rain)………is raining………………… heavily now. You should (stay)……………stay………… at home and (read) ………read……………………books.
2/ What are you (do) …………doing………………………………at the moment? - I (write) ……………am writing…………………….an essay.. .
3/ Where are Lan and Ba (go) ………going…………………tomorrow? They (visit) ………are going to visit………....the Museum.
4/ You (have) ………will have………………………………………………………………Geography next Friday.
5/ What about (play) ……playing…………………………a game of chess?
6/ It takes her 10 minutes (make) ………to make…………………….this toy.
7/ She (be) …………will be…………………..ten on her next birthday.
8/ I (meet) …………will meet………………..you soon.
9/ Why don’t we (hold) ………hold………………a party?
10/ Let’s (go) ……………go………………camping.
11/ They (practice) …………are practicing…………………….playing the guitar in the music room now.
12/ We shouldn’t (waste) ………waste………………….water.
13/ I’d like (drink) …………to drink…………………..some orange juice.
14/ Hoa usually (do) …………does…………………..aerobics early in the morning.
15/ Would you like (come) …………to come…………………… to my house for lunch?
16/ They (go) ………are going to………………..to visit Hue next summer.

sao lại không có cả trường chứ ????????

Cam / unhappy / to / always / make / wants / Tam.
=> Cam always want to make Tam unhappy

Students / have / lessons / don't / Sunday / on.
=> Students don't have lessons on Sunday

4 

 like nha

1,It was noisy next door. Our neighbors......a party

a, had            b, were having           c, had had                     d, have had

2,She........very angry when she knows this

a,shall be          b,has been            c,will have been            d,will be

3,She.........music all day. Now she fells tried

a,has been playing             b,is playing             c, played             d, plays

1,some times / evening / play / computer / I / the / games / in
=> Sometimes I play computer game in the evening

2.I'm / play / tennis / I / very / swimmer / well / don't / but / a / good
=> I'm play tennis very well but I don't a good swimmer