It’s important ______ the piano well.
| A．of him to play | B．for him to play | C．of him playing | D．for him playing |
This kind of food _____ cool, clean and dry according to the instruction.
| A．should be carried | B．must be put | C．should be placed | D．must be kept |
一Have you mended your shoes，Bob? 一Yes , I ______ them twenty minutes ago.
| A．have mended | B．mend | C．had mended | D．mended |
With the help of the Internet，news can _______ every corner of the world.
| A．arrive | B．reach | C．go | D．get |
一Do you. Know _______ lady in blue? 一Yes. She is a teacher of a university.
| A．the | B．a | C．an | D．不填 |