—Do you think playing cards is beneficial to our study?—No,if ________,it can help us kill time when we have nothing to do.
I asked him ___ it, but he just remained unmoved.
Although he didn't expect ___ me here, he adviced ___ to the nearest resturant.
He had learnd ___ such things, so he refused ___.
In the complete darkness, she began ___ afraid.
John had ___ me to do this, but he didn't .