$@Stormy$

$III.$

$1.$ have known 

$⇒$ Thì HTHT - DHNB : for ten years

$2.$ went 

$⇒$ Thì QKĐ - DHNB : yesterday

$3.$ was watching

$⇒$ Thì QKTD - DHNB : at 9 a.m yesterday afternoon

$4.$ came

$⇒$ When + S + V2 / V-ed + O , S + was / were + V-ing + O.

$5.$ taking

$⇒$ Do you mind + V-ing + O ?

$6.$ sitting

$⇒$ Would you mind + V-ing + O ? 

$7.$ watches

$⇒$ Do you mind if + Clause Of HTĐ ?

$8.$ stood

$⇒$ Would you mind if + Clause Of QKĐ ?

$9.$ did they eat

$⇒$ Thì QKĐ - DHNB : yesterday

$10.$ to solve

$⇒$ S + be + adj + enough + to + V_inf + O.

$V.$

$1.$ D. Wash $-$ Washing

$⇒$ Get used to + V-ing $:$ Quen với việc gì đó

$2.$ A. Despite $-$ Although

$⇒$ Despite + V-ing / Noun Phrase

$⇒$ Although + Clause

$3.$ A. That $-$ If 

$⇒$ Câu gián tiếp dạng câu hỏi $:$ S + asked + if / whether + S + V + O.

$⇒$ Nhớ phải lùi thì

$4.$ A. Use $-$ Using

$⇒$ What about + Vi-ng 

III.

1.have known (for ten years là DHNB thì HTHT )

2.went (yesterday là DHNB thì QKĐ)

3.was watching (at 9a.m yesterday afternoon là DHNB thì QKTD)

4.came(When + S + V quá khứ + O , S +was /were + Ving + O )

5.taking(DO you mind + Ving ?)

6.sitting(whould you mind + Ving ? )

7.watches(Do you mind if + clause thì HTĐ)

8.standed(Would you mind if + clause thì QKĐ )

9.did they eat(yesterday là DHNB thì QKĐ)

10.to solve ( S + be + adj enough + to Vinf )

V.

1.D=> washing ( get used to + ving : quen vs việc j )

2.A-> although ( despite + Ving /N phrase , although + clause)

3.A=> if ( câu gián tiếp dạng câu hỏi ko có từ để hỏi : S + asked + if + S + V + O lùi thì )

4.A=> using ( what about + ving )