Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.
| A．to see | B．to be seen | C．seeing | D．seen |
Coming into the room, I found them _______ at the table, ________ chess.
| A．seated; played | B．seated; playing |
| C．seating; playing | D．seating; played |
Along with the letter was his promise _____he would visit me this coming Christmas.
| A．which | B．what | C．that | D．Whether |
John opened the door. There _____ he had never seen before.
| A．a girl did stand | B．a girl stood |
| C．did a girl stand | D．stood a girl |
______, the car stopped all at once.
| A．Seeing a boy lying on the ground |
| B．On seeing a boy sitting on the road |
| C．The driver saw a boy standing on the road |
| D．The minute the driver saw a boy seated on the road |
He ______ busy yesterday, or he ______ you with your experiment.
| A．was; had helped | B．was, would have helped |
| C．had been; would have | D．were; would have helped |