When the old man saw some litter on the ground, he quickly .
| A．picked it up | B．picked up it | C．picked them up | D．picked up them. |
Danny did all kinds of things to make the baby and he succeeded.
| A．to stop crying | B．stop crying |
| C．to stop to cry | D．stop to cry |
He always gives me useful advice when I don’t know next .
| A．how to do | B．when to do |
| C．what to do | D．where to do |
The teacher class when I the classroom at ten o’clock yesterday morning.
| A．was having, got to | B．had, got to |
| C．had, was getting to | D．was have, got to |
My father my hometown for two months.
| A．left | B．went away from |
| C．has left | D．has been away from |
I love teachers ________ are friendly to us.
| A．who | B．what. | C．where | D．whom |