II. Give the correct form of the verbs in brackets

1. In spite of (be) _____ ill, he goes to school today

2. We (watch) _____ cartoon in the living room at this time tomorrow

III. Correct the form of words

1. These is a special .......... for Japanese girls on March 3^rd every year. (celebrate)

2. We are having an inter with Mr. Phong, one of the Elephant Race .......... ( organize)

3. There are a lot of cultural and .......... activities held as part of this festival. (art)

4. Waves will be used as an .......... friendly source of energy. ( environment)

5. Solar power can be used to .......... or cool our houses. (hot)

I. Choose the best answer to complete these sentences

1. My children often sleep while they are .......... a plane

A. in B. on C. by D. for

2. This is Linda's hat, and those shoes are ..........

A. her B. hers C. our D. their

3. People can wear a .......... on thier back to fly anywhere easily in the future

A. jet pack B. flying car C. teleporter D. high-speed bicycle

BT: Cho ΔABC. Vẽ BD ⊥ AC,

CE ⊥ AB. Gọi M là trung điểm của BC.

C/m điểm M ∈ đường thẳng trung trực của DE

BT: Cho ∠xOy = 60^o và điểm A nằm trong góc

đó. Vẽ điểm B sao cho Ox là đường trung trực

của AB, vẽ điểm C sao cho Oy là trung

trực của AC. C/m: a, ΔBOC cân ở O

b, Tính ∠BOC

BT: Cho ΔABC, AB < AC. Đường trung trực của BC cắt

AC ở M. C/m: AM + BM = AC