_____ he met with the terrible difficulty did he realize the importance of my advice．
| A．Even though | B．Only before | C．Never until | D．Ever since |
Tim Bemers-Lee is generally considered ____ the World Wide Web, on which all the information is shared by all.
| A．to have founded | B．having founded | C．founding | D．to found |
Was it in this very room ____ he made up his mind ____ he should break away from his family?
| A．that; which | B．which; that | C．which; which | D．that; that |
Later they discovered, ____ was news to him, that Pamela was the headmaster’s daughter.
| A．that | B．which | C．what | D．who |
I shall always ____ your friendship greatly for friendship is more important than money.
| A．value | B．pay high respect | C．respect | D．store |
The first textbooks written for teaching English as a foreign language ____ in the 16th century.
| A．came about | B．came out | C．came along | D．came up |