Historically, ________ main material for making tables has been wood, but ________ metal and stone have also been used.
| A．the; / | B．/; / |
| C．the; the | D．/; the |
finish the difficult task on time, we had to work day and night for weeks.
| A．So as to | B．So that |
| C．In order that | D．In order to |
Mary has been abroad for 6 months. I have written to her but I haven’t had time.
| A．must | B．could | C．should | D．might |
While through the old photos, I thought of many happy days.
| A．looked | B．look |
| C．looking | D．to look |
The teacher advised Tom to what he saw and what he thought during his trip.
| A．add up | B．hide away |
| C．go through | D．set down |
— My watch doesn’t work; I’ll get it .
— Why not buy a new one. It’s too old.
| A．to repair | B．repairing |
| C．repair | D．repaired |