Do remember to be ________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
—Shall I pick you up after the meeting is over?—Thank you. ________.
—Mom, today I received a message telling me to send money to the account.—Delete it. It’s a trick. Many a person ________ by such tricks.
So sudden ________that the residents had no time to escape.
— How long will it be _______ the president pays another visit to China?— It all depends.
Look! the ground is wet. It must have rained last night, _______?