From time to time a crocodile has snatched someone _______ he or she is even aware that the crocodile is there.
| A．when | B．until | C．since | D．before |
It was already past midnight and only three young men ____in the teahouse.
| A．left | B．remained | C．delayed | D．deserted |
____ so much trouble, we failed to complete the task on time.
| A．Faced | B．Face | C．Facing | D．To face |
____with so much trouble, we failed to complete the task on time.
| A．Faced | B．Face | C．Facing | D．To face |
Could you please tell me where you bought the shoes you ________ yesterday?
| A．tried on | B．put on | C．had on | D．pulled on |
I really can't understand ______ her like that.
| A．you treat | B．you to treat | C．why treat | D．you treating |