Gerund and Infinitive

It was his own fault, but I couldn’t help …............. sorry for him.

• to feel

• feeling

The medical authorities warned everyone …........ the water without first ….......... it.

• not to drink/boiling

• not drinking/to boil

If you’ve finished …....................... the dictionary, I’d like ….......................... it.

• using/to borrow

• to use/borrowing

Orphan elephants need …................... the same companionship as they would have received from their mothers in the wild.

• being given

• to be given

The first people …........... non-stop round the world were captain James Gallagher and his crew.

• to fly

• flying

The number of foreign students ….......... at Canadian universities has been increasing fast over the last decade.

• studying

• to study

A huge fossil turtle is the latest species ….............. the ranks of super-reptiles that are now known …. in ancient Colombia.

• joining / having lived

• to join / to have lived

Scientists …........... at Stanford University School of Medicine in the US have invented an implant that could help the blind …............. .

• working / to see

• to work / seeing

Dad threatened to stop ........................ me pocket money if I didn't do my homework.

• giving

• to give

Disease or injury may prevent nerves from sending appropriate signals or force them …................ inappropriate ones.

• sending

• to send