— I will come to attend your lecture at 10:00 tomorrow. — I’m sorry, by then my lecture will have ended and I _____ in my office.
.Ram explained to his mother ________ he would get home late that night because of extra work.
Air pollution is getting more and more serious, so we must take action ________ it is too late.
Sarah Brightman, ________ will fly to space in 2015, is the first woman to fly there in the field of music.
The businessman wears a suit and a tie with a beard ________ the season.
The course about Chinese food attracts over 100 students per year, ________ up to half are from overseas.