to V or Ving ???

The question is easy .......................

• to answer

• answering

• answer

The man asked me how .............. to the airport.

• getting

• get

• to get

Would you mind ............... the window ?

• to open

• open

• opening

• opened

.......... + Ving : Trì hoãn làm gì

• Consider

• Imagine

• Admit

• Postpone

Don't forget ................. the door before going out.

• to lock

• locking

• locked

• lock

On the way home, they suddenly stopped ................ some food at the convenience store.

• buying

• buy

• to buying

• to buy

Why do you keep ............. me questions ? Please leave me alone!

• to ask

• ask

• asked

• asking

One of her students admitted ............... the window.

• breaking

• break

• broken

• to break

Visitors are required to turn off their electronic devices when ............ the laboratory.

• they entered

• enter

• entering

• to enter

I'm used to ................. up early in the morning.