ering his health, I advisehim to ______ an hour or two each day to work out

Economy of the world in 2010 was not so good. Many small companies ______.[ ]

1I_______ like science but I think it is very useful.

Shall I buy this toy for little David—__________. He might already have it.

30.They ______ be at home. You see, the door is locked from the outside.