He made _____ experiments to prove his theory, and the number _____ added up to 600.
| A．a large number of ;have | B．a great deal of; has |
C．a great many; has | D．plenty of; have |
Devoted parents are never mean to their children, and they are always willing to devote all they have ______ their kids.
| A．to help | B．to helping | C．for helping | D．for help |
Nelson Mandela, who became____ president of South Africa in1994, passed away on December 5,2013, at _____age of 95.
| A．a; the | B．/; the | C．a; / | D．the; the |
I would appreciate ______, to be frank, if the goods could be delivered as soon as possible．
| A．you | B．that | C．it | D．myself |
____ each other for years, they talked almost the whole night and had a wonderful time.
| A．Not having seen | B．Having not seen | C．Not seen | D．Not to see |
Franklin's ability to learn from observations and experience ____ greatly to his success in public life.
| A．owned | B．contributed | C．attached | D．related |