Only after the woman had her own child ______how difficult it was to be a mother.
| A．she realized | B．had she realized | C．she had realized | D．did she realize |
Alex changed his mind at the last minute，otherwise we ________ an agreement.
| A．should have reached | B．could have reached |
| C．can reach | D．should reach |
The new driving test seems to be challenging，so the chances ________ he can pass it at the first attempt are small.
| A．how | B．whether |
| C．that | D．where |
He became the ________ of criticism by the readers for his newlypublished book.
| A．target | B．theme |
| C．fortune | D．figure |
________ an hour every day has made a considerable difference to my health.
| A．Having walked | B．Walk |
| C．Walking | D．Walked |
Be careful，for the delicate glass ________ easily.
| A．is broken | B．breaks |
| C．will break | D．has broken |