I have ________ French. What about you?
A．many difficulties to learn B．a few troubles in learning
C．quite a little difficulty to learn D．a great deal of trouble learning
I ________ with my grandma because my parents have gone abroad for further study.
A．stayed B．am staying C．have stayed D．was staying
How can they learn much ________ they spend so much time playing computer games?
A．although B．when C．till D．until
Cars do cause us some health problems, in fact, far more serious ________ than mobile phones do.
A．one B．ones C．it D．those
After ________, the litter girl was depressed and kept silent all the day.
A．being made fun B．making fun of
C．making fun D．being made fun of
The scientist corresponds with colleagues in order to learn about matters ________ to her own research.
A．relevant B．instant C．resistant D．important
