To improve the quality of our products, we asked for suggestions had used the products.
| A．whoever | B．who | C．whichever | D．which |
In many countries more and more forests and even agricultural land are being lost to development, _______ much of the land to become desert.
| A．caused | B．causing | C．having caused | D．to cause |
______ which school was suitable for their son, the parents visited lots of different primary schools in the city.
| A．To find | B．Being found | C．Found | D．Finding |
It was last Saturday ________ we visited the History Museum.
| A．which | B．and | C．that | D．Where |
I'll go to the library as soon as I finish what I.
| A．was doing | B．am doing | C．have done | D．had been doing |
--- How do you find your new classmates?
----Most of them are kind, but _______ is so good to me as Bruce.
| A．none | B．no one | C．nobody | D．neither |