Whenever asked to help me with my lessons，he always refuses， he is too busy．
| A．to say | B．saying | C．says | D．having said |
. He is one of those who ______ very hard.
| A．works | B．work | C．is | D．are |
The parents as well as the baby ______ in high spirits.
| A．are | B．is | C．has been | D．have got |
. Both bread and butter ______ on sale in this shop.
| A．is | B．are | C．have | D．has |
The police ______ for the lost child everywhere.
| A．is looking | B．has looked | C．are looking | D．are looked |
A group of children ______ hide and seek in the garden.
| A．is playing | B．are playing | C．has been playing | D．was playing |