Despite the fact that all three teams ________ different approaches to the problem, they were all immediate successes．

 As nobody here knows what is wrong with the machine, we must send for an engineer to _______ the problem.

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.

 —Wow！You've got so many clothes.—But ________ of them are in fashion now.

Little Oliver can always _____ his parents, who will give whatever he asks for.