new destination B2 infinitive vs gerund

He looks so funny. Whenever I see him, I can't help ______________ (smile) .

• smile

• smiling

• to smile

I was very tired. I tried ______________ (keep) my eyes open but I couldn’t.

• keep

• keeping

• to keep

Imagine ___________ (live) with someone who never stops___________ (talk).

• live; talk

• living; talking

• to live; to talk

• living; to talk

I hope the children won’t go near the water. I warned them ___________ (not / go) near it.

• not go

• not going

• not to go

• to not go

I saw the plane __________ (crash) in to the hill and ___________ (burst) into flames.

• crash; burst

• crash; bursting

• crashing; burst

• to crash; burst

1. ___________ (learn) about other cultures makes people more tolerant.

• Learn

• Learning

• To learn

I rang the doorbell but there was no answer. Then I tried __________________ (knock) on the door, but there was still no answer.

• knock

• knocking

• to knock

I’m very sorry for ___________ (be) late; it was kind of you ____________ (wait) for me.

• be; wait

• being; waiting

• being; to wait

• to be; to wait

I hope you have a good reason for ___________ (not / call) me back.

• not call

• not calling

• not to call

• to not call

Listen! I can hear the bell __________ (ring), but nobody seems to be coming _________ (open) the door.

• ring; open

• ringing; opening

• ringing; to open

• ring; to open