If 1:

If + S + am/is/are , S + will/can/shall + V1

If + S + V1/s/es , S + will/can/shall + V1

If 2:

If + S + were , S + would / could + V1 

If + S + V2/ed , S + would / could + V1 

If 3:

If + S + had + V3/ed , S + would / could + have + V3/ed

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a. would have gone 

b. would have swum

c. would have gone 

d. wouldn't have left 

e. wouldn't have walked 

f. would have drunk 

g. would have studied 

h. would have swum

i. would have found 

j. would have bought 

k. would have gone 

l. knew / would tell 

m. có đáp án rồi 

n. would have been

o. would have died / hadn't taken 

p. would have came / had invited 

q. would have helped / had requested 

r. wanted / could marry 

t. were / would be 

`color{orange}{~MiaMB~}`