24．While reading, you can make a mark _____ you have a question．
| A．the place where | B．what | C．that | D．Where |
Mr. Black, ＿＿＿＿＿ born in Kentucky, lived and practiced law in Missouri.
| A．was | B．he was | C．although | D．who he was |
All substances, ＿＿＿＿＿ solids, liquids, or gases, are made up of entirely atoms.
| A．whether they | B．whether | C．whether are they | D．whether are |
—— How about the number of students playing on the playground?
—— ＿＿＿＿＿.
| A．Small | B．Many | C．Little | D．Most |
—— He promised to come to see you.
—— But he ＿＿＿＿＿. I’ve been all alone.
| A．didn’t | B．wouldn’t | C．hasn’t | D．won’t |
＿＿＿＿＿, you have given me a lot of help.
| A．Tell the truth | B．To tell the truth | C．Telling true | D．Telling truth |