________ many times , he finally understood it.
Can you make sure ______?
The sad mother ______ crying when the reporter asked about her son’s death.
Because the shop ______, all the T-shirts are sold at half price.
—What do you think of John?—He’s a good boy, but he ______ be really stubborn at times.
In order to support his study, his brother can’t wait ______ money.