what

who

is having

has

takes

to stay

drinks

is eating

is

speaks

has been

has visited

1.were

2.was

3.were

4.were

5.wasn't

6.wasn't

7.wasn't

8.weren't

9.wasn't

10.was/wasn't

D

Cây xấu hổ

cây bắp cải

20÷5=4

a) Mỗi gói có:

6 x 5= 30(cái kẹo)

b) 5 gói có:

30 x 5= 150(cái kẹo)

a. Mỗi bó có số que tính là:

10x3=30(que)

b. 3 bó có số que tính là:

30x3=90(que)