—Did you happen to hear the recent news? —Yes, Alice ____ the gold medal in the speech contest, which I find hard to believe.
I won’t call you ________ something unexpected happens.
The foreign guests, ____ were government officials, were warmly welcomed at the airport.
He is writing a letter______ a pen that I have never seen before.
________ the boy didn't take medicine made his mother angry.
I don’t know ________ is in charge of English department.