The last time we had great fun was _____ we were visiting the Water Park.
With online course Crazy English has over 20 million students all over China _______ the class through the Internet .
He sat back on the chair, took a book and began to read, ___.
At the computer operation test, one is supposed to stay at his own machine, keep his eyes on his screen, ______ to anyone.
______ as the “First Lady of Speech”, Dr Lillian Glass is recognized as one of the world’s leading experts on communication skills.
—What happened to you on your way back to the hotel last night ?—I lost my way in complete darkness and ,__________ things worse , it began to pour .