It is really a challenge for me to finish it. In order not to be disturbed, I spent three days ______ in my study surfing the internet to do the research.
| A．locking | B．locked | C．to lock | D．lock |
After he retired from office, Rogers __________painting for a while, but soon lost interest.
| A．took up | B．saved up | C．kept up | D．drew up |
—Our family will go to Australia for a holiday.
—Oh, really? That sounds __________!
| A．fantastic | B．fragile | C．flexible | D．Fragrant |
There must be a better way to teach our students __________value of __________life than just inviting an old professor to give a boring lecture.
| A．the；a | B．／；the | C．a；the | D．the；／ |
So fast ________ that I could not catch up with them.
| A．did they run | B．they had run | C．they ran | D．had they run |
She was in a _________ as to whether to stay at school or get a job
| A．dilemma | B．choice | C．terror | D．election |