Trên 1 nửa mặt phẳng bờ chứa tia At , vẽ 2 tia Am và An sao cho góc tẦm = 50 độ; góc tÂn = 100 do

a> Tia nào nằm giữa hai tỉa còn lại

b>Tính số đo góc mAn

c>Tia Âm có phải là tia hân giác của góc Âm không ? vì sao ?

Tim x E Z

â) x + 2 là U ( 3x -7 )

b) x -5 la B ( x + 1 )

c) 2x- 1 la U ( 5x 4 )

Tìm a ,b sao cho b - a - 3b= 8

Tìm x E Z để

a) x + 2 là Ư ( 3x - 7 )

b) - 5 là B( x + 1)

c) 2x - 1 là Ư (5x - 4 )

in his free time he enjoys ........................ part in sport

a : takes b : to take c: took d: taking

We used to .......................................................................in a small village

a : live b: lived c: living d: were living

You seem very ........................... today , Lam ( happy )

Deaf - mutes can ............................. speak .................hear

a: both ............and b : not only ........... but also c: neither ........ nor d: either ..........or

We have to ( do) ................... our homework evrynight

He doesn't pracitise ( speak ) .............EL with his friends

They are good friends . They ( know ) ........................ each other for a long time

He enjoys ........................ flims on Sundays ( watch )

Which subject ....................................... you ..................... yesterday ? ( have )

I ..........................................................her since she left ( not see )

She ................................ to visit her mother

a : have b : must cc : do d : has

This desk is ........................ that desk

a : long as b : long so c : as long as d : as long so

Hao can't buy this car because he isn't ............................ to buy it

a : enough rich b : rich enough c : too rich d : rich too