______is estimated that a round-trip to Mars would take more than a year.A,That B,what C,There D,It
Jane didn’t follow our advice that she ___ more attention to her pronunciation.
-- I go out to play now, mum? --No, you . You should do your homework first.
The teacher as well as the students planting trees.
He made clear to his workmates that he would leave the company.
Please remind me ___ go without him tomorrow.