This is the biggest lab__________we have ever built in our university.
| A．which | B．what | C．that | D．Where |
Mary is the only one of the girls who _____ often late for school.
| A．is | B．are | C．comes | D．get |
Mary is one of the girls who _____ often late for school.
| A．come | B．are | C．comes | D．get |
Many a child _____ lost their parents.
| A．has | B．have | C．is | D．are |
The cattle _______ grazing on the grass.
| A．were | B．was | C．be | D．is |
Neither my wife nor I myself ____ able to persuade my daughter to change her mind．
| A．is | B．are | C．am | D．be |