$1.$ Matt has not finished his homework yet.

- S + have/ has + (not) + V3.

$2.$ What subject do you enjoy at school?

- Do/ Does + S + V (bare)?

$3.$ The last time I visited my family was in 2005.

- S + haven't/ hasn't + V3 + time = The last time + S + V2 + was + time.

$4.$ My parents have been in New Zealand since 2010.

- S + have/ has + V3.

$5.$ Jane suggested going to Bali for their summer vacation.

- suggest + V-ing.

$6.$  I do not afford to buy the computer because of the high cost.

- (not) afford + to V.

- because of + N/ Noun phrase/ V-ing.

$7.$ The students are capable of finishing the test within 40 minutes.

- S + tobe + capable of + V-ing.

$8.$ It's pointless to have that old bike repaired.