cho dang dung cua dong tu trong ngoac:
1, I (have) plenty of money now if I ( not/spend) so much yesterday.
2, If someone (give) you a boat, what you (do) ?
3, If you (press) CTRL + S you (save) the file.
4, the children (be) happy if he (teach) them English.
5, If she ( buy) a new hard disk, she (not/lose) all data.