What _______ pity that you must leave now! It is such _______ great fun to have dinner with you．
| A．a; a | B．a; the | C．/; a | D．a; / |
There is ________ in population that a food shortage is caused.
| A．so rapid an increase | B．such rapid an increase |
| C．such rapid increase | D．so a rapid increase |
________ with the other students, the girl has better listening and speaking ability.
| A．Comparing | B．Compares | C．To compare | D．Compared |
He always helps us ________ he is doing when we turn to him for help.
| A．whenever | B．whatever | C．whichever | D．however |
—How many photos have you taken?
—I’ve taken 60 ________. I’ll take more.
| A．in general | B．in return | C．in total | D．at all |
With the popularity of network, email has largely ________ the traditional letter.
| A．exchanged | B．removed | C．expanded | D．replaced |