Our teacher entered the classroom, __________.

It is ______ he often fails in exams ______ makes his parents worried about him.

There is 8-year-old boy playing Chinese chess with his friend in the classroom.

Would you like _______ or shall we go by bus?— I prefer _______,but we have to take a taxi, for time is short.

Sam, my iPhone is in my bedroom. Could you ____________ it for me? — No problem.