— Are you sure the delegation will come to our school next week?
— _____. The head of it has just emailed me about the departure time of their flight.
| A．No wonder | B．You bet | C．Don’t mention it | D．Definitely not |
It's ten years since the scientist _______to discover the valuable chemical.
| A．kept up | B．set out | C．took in | D．set about |
I called Bruce many times yesterday, but I couldn’t get through. His brother ____ on the phone all the time.
| A．was to talk | B．was talking | C．would be talking | D．had talked |
Although Fleming discovered Penicillin, it was over a decade ______ someone else turned it into the great drug of the 20th century.
| A．before | B．since | C．when | D．as |
—Look! Here is a message on my mobile phone, asking me to send money to....
—Don’t believe it! It’s a trick. More than one person _____ by such tricks so far.
| A．had been cheated | B．was cheated | C．have been cheated | D．has been cheated |
_____ what could happen, he did whatever he liked to and nobody could stop him.
| A．In case of | B．Regardless of | C．As a result of | D．In addition to |