Khí nào sau đây tham gia quá trình quang hợp của cây x
A.Oxygen.
B.Nitrogen.
C.Khí hiếm.
D.Carbon dioxide.

Phát biểu nào sau đây đúng Khí oxygen không tan trong
A.Khí oxygen không tan trong nước.
B.Khí oxygen sinh ra trong quá trình hô hấp của cây xanh.
C.Ở điều kiện thường, oxygen là chất khí không màu, không mùi, không vị.
D.Cần cung cấp oxygen để dập tắt đám cháy.

Quá trình nào sau đây cần oxygen Hô hấp Quang hợp Hòa
A.Hô hấp.
B.Quang hợp.
C.Hòa tan.
D.Nóng chảy.

I have a lot of assignments to do Ly said Ly said that
A.Ly said that he has had a lot of assignments to do.
B.Ly said that I have a lot of assignments to do.
C.Ly said that I had a lot of assignments to do.
D.Ly said that he had a lot of assignments to do.

It is not necessary for you to book movie tickets in a
A.You needn't book movie tickets in advance.
B.You must book movie tickets in advance.
C.You would book movie tickets in advance.
D.You can't book movie tickets in advance.

He last went to the cinema two months ago He hasnt gon
A.He hasn't gone to the cinema for two months.
B.He has two months to go to the cinema.
C.He has gone to the cinema for two months.
D.He didn't go to the cinema two months ago.

He last went to the cinema two months ago He hasnt gon
A.He hasn't gone to the cinema for two months.
B.He has two months to go to the cinema.
C.He has gone to the cinema for two months.
D.He didn't go to the cinema two months ago.

My friends often spend her free time surfing the Inter
A.often
B.her  
C.surfing  
D.games

My younger brother draws a very beautiful picture for
A.younger
B.draws  
C.beautiful  
D.for

The spokesman had an uphill struggle to find an explan
A.spokesman
B.uphill  
C.intelligent  
D.layman