It was several minutes _______ we realized what was happening~our dog was trapped in a newly-dug tunnel.
| A．since | B．before | C．until | D．while |
I lost my way in complete darkness and, matters worse, it began to rain.
| A．made | B．having made | C．making | D．to make |
She had golden hair when she was a child, but_________ she got older and older, her hair went darker and darker.
| A．while | B．when | C．after | D．as |
__________she was invited to the ball made her very happy.
| A．If | B．That | C．When | D．Because |
—ou___________ stop me.
—Even if you __________it, I won't allow you to swim across the river.
| A．mustn't; dare not do | B．may ; dare not do |
| C．can; dare to do | D．needn't; dare do |
He__________ he would be able to leave tomorrow, but it's beginning to took difficult.
| A．hopes | B．was hoping | C．had hoped | D．hoped |