They will never forget _______ the Prince.
A. see
B. to see
C. seeing
D. will see
KEY C
Giải thích: Forget Ving: quên đã làm gì
Dịch: Họ sẽ không bao giờ quên đã được gặp hoàng tử.
Put plants ............... a window so that they will get enough light.
If you can give me one good reason for your acting like this, _____ this incident again.
His teacher regrets _______ him that his application for the job has been turned down.