It’salready10o’clock. I wonder how it that she was two hours late on such a short trip.

WeChat provides a networking platform ______ communication is faster and easier.

It was not until mid-nighttheyreached the camp site.

o many people at the street corner______ — Oh, a traffic accident has justhappened.

The woman biologist stayed in Africa studying wild animals for 13 years before she returned.—- Oh, dear! She _______ a lot of difficulties!