Has she ever asked for the reason________ may explain his coming late？
| A．why | B．for which | C．that | D．for that |
By serving others, a person focuses on someone other than himself or herself, ________ can be very eye-opening and rewarding.
| A．who | B．which |
| C．what | D．that |
The book was written in 1946, ____ the education system has witnessed great changes.
| A．when | B．during which | C．since then | D．since when |
It’s helpful to put children in a situation______ they can see themselves differently.
| A．when | B．which | C．that | D．where |
Can you lend me the book ________ you were reading this morning？
| A．that | B．what |
| C．whose | D．who |
I wish to thank Professor Smith, without ________ help I would never have got this far.
| A．who | B．whose |
| C．whom | D．which |
The book has helped me greatly in my daily communication, especially at work ________ a good impression is a must.
| A．which | B．when | C．as | D．where |
English is a language shared by several diverse cultures, _________ uses it differently.
| A．all of which | B．each of which | C．all of them | D．each of them |
He has many books, are written in English.
| A．most of them | B．most of whom | C．most of which | D．most of those |
There were more than 1,400 occasions last year ________ access to humanitarian aid was denied in some conflict zones.
| A．of which | B．in which |
| C．on which | D．at which |