rút gọn phân số cho tối giản:

a) 54/18

b) 72/56

c) 23/69

d) 42/84

các bn giúp mk nhé

Weekend

tuyệt vời

17

D

speaks

Is taking

My brother and I are sitting(sit) next to you and your sister now.

(-)My brother and I are not sitting next to you and your sister now.

(?)Are my brother and I sitting next to you and your sister now?

Mr.Hung and his sons often fly(often/fly)their kites in the afternoon.

(-)Mr.Hung and his sons often don't fly their kites in the afternoon.

(?)Do Mr.Hung and his sons fly their kites in the afternoon?

The ox usually eats(usually/eat) the grass in the field

(-)The ox usually don't eat the grass in the field.

(?)Do the ox eat the grass in the field?