The environmentalist at last reached _____ was once an industrial area where he did a field survey.
| A．what | B．that |
| C．where | D．which |
Such a problem is＿＿＿＿difficult for a primary school student ＿＿＿.
| A．so； to work | B．very too； to work out |
| C．rather too； to work out | D．quite too； to answer |
The railway was opened＿＿＿＿＿＿traffic＿＿＿＿＿＿＿ April 4, 1985.
| A．to； on | B．to； in | C．by； on | D．for； on |
Ted has been absent＿＿＿＿＿class for quite some time.
| A．for | B．with | C．of | D．from |
He divided the sweets＿＿＿the children who were divided ＿＿＿three groups.
| A．in； in | B．into； into |
| C．between； in | D．among； into |
The pianist began to play and the girl in red began to sing ＿＿＿＿the music.
| A．with | B．along | C．through | D．to |