Your father coughs a lot. You'd better_______ him_______ any more.
— Listen! ______ beautiful music Lang Lang is playing!—He is such a wonderful pianist!
—Why are you in such a hurry, Anna?—Because I can’t find my schoolbag _______.
They saw the math teacher ______ the classroom just now.
— How long has Bob ______?— Since 2012.
—Why did Mike ______ the chance of studying abroad last year?— Because he had to look after his sick father.