Lady Gaga has put off her concerts because of the difficulties _______by the ongoing strikes.
| A．causing | B．to cause | C．to be caused | D．caused |
--- Can you climb that tree, my boy?
--- __________ ?
| A．I | B．Myself | C．Mine | D．Me |
_________ always succeed.
| A．Honest and clever students | B．Students who honest and clever |
| C．Honest students and clever | D．Students are honest and clever |
--- What’s Joan doing?
--- _________ newspapers in the room.
| A．She reading | B．She reads | C．To read | D．Reading |
--- Mary didn’t attend the lecture, did she?
--- Yes, she ________.
| A．attended | B．didn’t attend | C．didn’t | D．did |
--- Will you waste your time and money on that? --- Certainly ________.
| A．I not | B．don’t | C．not | D．no |