I think English is ____unimportant subject.—I don’t think so. It is ____useful tool when we talk with foreigners.

Could you please tell me how soon Xi Jinping ______ his first visit aboard—In about three weeks.

Don’t go to crowded places, _______ you may have the flu easily.

Shirley is still waiting for her flight to New York City ____ the airport.

ou seen my e-mail about our TESL, project—Yes Luckily, I checked my e-mails yesterdayNormally, I my e-mail-box for days