Collecting stamps as a hobby___________ increasingly popular during the past fifty years.
| A．becomes | B．became | C．has become | D．had become |
______ is reported in the newspaper, the big fire was finally put out with very few injuries.
| A．What | B．That | C．As | D．It |
_________ to education , she spent much time communicating with the students and their parents.
| A．Devoted | B．Devoting | C．Having devoted | D．Devote |
The experiment done by Tomlinson _______successful.
| A．proves | B．was proved | C．is proved | D．prove |
He is always full of ______ as if he never knew tiredness.
| A．strength | B．force | C．energy | D．spirit |
The bag has lots of things in it, ______ an old dictionary.
| A．containing | B．showing | C．holding | D．including |