This is the best chance for you to go abroad. Don't ________.
At present , many people from the countryside go to the cities ______better jobs.
What the doctors really doubt is ____my mother will recover from the serious disease soon .
--I like Tom very much _____he sometimes gives me some trouble. -- Oh, it’s unbelievable.
Our English teacher advises us ____________ more after class.
— How was your weekend? — Great! We ______ a picnic by the lake.