If it was not an accident, he must have done it ___________.
| A．on purpose | B．for purpose | C．in time | D．with care |
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 |
Many students, ________ some pocket money and social experience, work during their holidays.
| A．to get | B．having got | C．getting | D．got |
He likes books ________ science because he wonders what and why our world is.
| A．relating to | B．related to | C．connecting to | D．connected to |