Grades would______from one or two，for outstanding or excellent，to six or seven，for poor or very poor.
| A．suffer | B．differ | C．come | D．range |
________ early for his date, Mark spent time reading the newspaper.
| A．Arriving | B．Having arrived |
| C．Arrived | D．To arrive |
I got to the office earlier that day, ________ the 7：30 train from Paddington.
| A．caught | B．to have caught |
| C．to catch | D．having caught |
The lecture, ________ at 7：00 pm last night，was followed by an observation of the moon with telescopes.
| A．starting | B．being started |
| C．to start | D．to be started |
You cannot accept an opinion ______ to you unless it is based on facts.
| A．offering | B．to offer |
| C．having offered | D．offered |
The sunlight is white and blinding, ________ hardedged shadows on the ground.
| A．throwing | B．being thrown |
| C．to throw | D．to be thrown |