She was so lost in her own thought that she was not _____ the coming danger .
| A．careful about | B．interested in | C．concerned with | D．aware of |
Please remember nothing can be learned ______ hard work.
| A．by | B．at | C．without | D．for |
—Susan, go and join your sister cleaning the yard.
—Why ____? John is sitting there doing nothing.
| A．him | B．he | C．I | D．me |
the house on fire, he dialed 119.
| A．To see | B．Seeing |
| C．Having seen | D．Being seen |
I hurried ________ I wouldn’t be late for class.
| A．since | B．as if |
| C．so that | D．unless |
They won't buy new clothes because theymoney to buy a color TV set.
| A．save | B．are saving |
| C．has saved | D．were saving |