Bill has asked me _____ more carefully next time．
| A．helped | B．helps | C．helping | D．to help |
We don’t know _________, maybe at two o’clock tomorrow afternoon.
| A．why will we start | B．how we will start it |
| C．when we will start | D．where we will go |
Our life _________ greatly in the last ten years.
| A．changed | B．has changed | C．have changed | D．is changed |
She didn’t finish her homework yesterday evening because she worked too _________.
| A．quietly | B．clearly | C．slowly | D．politely |
We’ll do what we can _________ our environment.
| A．protect | B．to protect | C．be protected | D．be protecting |
June is the sixth of the year. It comes _________ May and July.
| A．about | B．before | C．during | D．between |