Lots of trees ________in our city over the years. It is becoming greener and greener!
| A．are planting | B．have planted |
| C．will be planted | D．have been planted |
It was ________ who respected their teachers.
| A．them | B．their |
| C．they | D．themselves |
_______ is the population of the city?
| A．How many | B．What |
| C．How many people | D．How much |
There are many trees on ________ side of the street.
| A．either | B．any | C．all | D．both |
– When shall we meet again next week?
-- _______ day is possible. It’s no problem with me.
| A．Either | B．Neither | C．Every | D．Any |
In the dark street, there wasn't a single person __________ she could turn for help.
| A．to whom | B．who | C．from whom | D．that |