What time would it be convenient _____us to meet again?

I cannot tell the_____difference between the twins.

It is often _____ that human beings are naturally gifted to speak.

The most important is not_____ you do, but_____ you do it.

（ ） my delight, our school football team won the game easily.

In （ ） Chinese culture, children’s marriage decisions were often made by parents.

I _____ him last night, but I was too busy.

I’m not used to （ ） in that impolite way.

The authorities wouldn’t （ ） us permission to fly all the way down to San Francisco.

Why is it （ ） the more connected we get, the more disconnected I feel?

The number of deaths from heart disease will be reduced greatly if people _____ to eat more fruit and vegetables.

（ ） I admit that she has shortcomings, I still like her.