300 giây 

138 giây 

21 ngày 

313 phút 

3 phút? 

210 phút 

Lan swims well 

C

B

A

D

D

A

A

B

D

A

A

D

Tìm x, biết:

arrived 

have waited 

has taught 

had done 

were painting 

He used to swim in this river when he was young

The car will be repaired this afternoon 

How heavy are you? 

Was this car parked here last night? 

I have not played sports for three months 

What is the depth of the Hong river?