1, had (S + wish + S + V-ed)
2, had
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1, I wish I didn't have to study
2, If only they worked fast (If only + S + past tense)
3, I wish I might go on a camping trip.
4, I wish I had a bigger house
5, If only they kept quiet.
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1, rained → rain (didn't + Vbare)
2, been → be (can/could + be/Vbare)
3, (đúng)
4, take → took
5, have → had
6, have more freedom → had more freedom
7, don't → hadn't (If only + S + past perfect)
$\text{#BTS}$