Complete the sentences with the suitable form of the verbs in brackets:
If she had (have) money, she would’ve bought (buy) a bigger house.
We ………… (eat) more fruit and vegetables if we …………. (want) to be healthier.
Jack …………….. (be) happier if he …………. (have) a girlfriend.
If you ……………. (talk) less, you …………. (understand) what the teacher said.