______ is to attend our evening.
That was the first time I _______ there and I was impressed by the friendly people very much
I shall never forget those years _____ I lived on the farm with the farmers, ______ has a great effect on my life.
Will you _____ the clock? It’s slow.
The Expo site should be _______ from anywhere in the city of Shanghai within 90 minutes by bus, subways and special taxis.
The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease.