It remains unknown _____the peace talk between the two countries is going to lead.
| A．why | B．when | C．how | D．where |
Many people are not________the danger of their children's bad habits, which lead to failing to make their dreams come true.
| A．well aware to | B．very aware of | C．aware that | D．well aware of |
A family of five is really a heavy burden, so we all have to work hard to________.
| A．find out | B．work out | C．help out | D．carry out |
Such animals like dinosaurs died out because they couldn’t _____ to the change of the climate.
| A．suit | B．keep | C．adapt | D．switch |
I like getting up very early in summer.The morning air is so good _____.
| A．to be breathing | B．to breathe | C．breathing | D．being breathed |
You need to take your job________if you want to keep it.
| A．curiously | B．seriously | C．nervously | D．Humorously |