Private cars will be required tostay off roads one out of five weekdays ____ the traffic pressure.

My son prefers us to email each other once a weekspend half an hour on the phone every night.[ ]

ng abroad, the boy was exposed to away of life_________he was not at all fanmiliar.

The chairman thought __________ necessary to invite Dr Smith to speak at the meeting

Sometimes drivers give him a tip, so thathe has just enough money to _____.