The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better.
I’d rather read than watch television;the programs seem ______ all the time.
Mr Johnson preferred ______ heavier work to do.
Lily’s mobile phone was left in a taxi accidentally,never______again.
Hearing his words,I couldn’t decide ______or remain.
The man we followed suddenly stopped and looked as if ______ whether he was going in the right direction.