_______ she seems to put on a smiling face every day, she hasn’t really got over the shadow of exam failure.
A．Because B．As C．Whether D．While
If you ask me, I would say that I won’t mind ______abroad to enrich my knowledge.
A．taking B．to take C．to be taken D．being taken
Have you ever ___ to the museum ___ we paid a visit last year?
A．been; which B．been; to which C．gone; which D．gone; to which
Some intelligent and successful people find _____ difficult to succeed in language learning.
A．them B．it C．themselves D．itself
---Do you know when she _________?
---Sorry, I don’t. But I’ll let you know when she _________.
A．comes, comes B．comes, will come
C．will come, will come D．will come, comes
The buildings in this modern city are growing tall, some even reaching over 400 meters _______ height.
A．at B．for C．in D．on
