Actually, Miss Zhang is not at all serious as she _____.
Don’t treat the vase as if it _______ made of steel.
Although we met with some difficulties in building the railway, we were still _____ about finishing it before the deadline.
There are some health problems that, when _____ in time, can become bigger ones later on.
Hardly ________________ she heard the strange scream coming from behind a tree.
It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.