had collected/returned

became/had already sent

had been/conducted

arrived/had alredy launched

had already completed/flew

III

A

B

C

D

B

A

C

C

A

D

A

7.How you (feel)……are...feeling………….. now? I (feel)……am feeling………….. hot.

is planting

does...do/watches/reads

don't go

are/are cooking

playing

is/is watering

are....feeling/am feeling

have lived

has had

bought

C
CT:Would you mind if I+Ved.....

\(C_{12}H_{22}O_{11}+H_2O\underrightarrow{t^0}C_6H_{12}O_6+C_6H_{12}O_6\)

\(C_6H_{12}O_6\underrightarrow{men.rượu}2C_2H_5OH+2CO_2\)

\(C_2H_5OH+O_2\underrightarrow{men.giấm}CH_3COOH+H_2O\)

\(CH_3COOH+C_2H_5OH⇌CH_3COOC_3H_5+H_2O\)

\(CH_3COOC_3H_5+H_2O⇌C_2H_5OH+CH_3COOH\)

\(C_2H_5OH+Na\rightarrow C_2H_5ONa+2H_2\uparrow\)

B

C

collection

wonderful

running

clothes

dangerous

tired 

working

customer

2 wondered => wonderful

vì chỗ còn thiếu từ loại phải điền là tính từ

collection

wonderful

running

clothes

dangerous

tired

working

customer