Every few years, the coal workers their lungs X-rayed to ensure their health.
| A．are having | B．have | C．have had | D．had had |
________ spared to ensure success
| A．No pains were | B．No pain was | C．Not pains were | D．Not pain was |
You are ________ than I thought
| A．less fool | B．less of fool | C．less of a fool | D．less a fool |
“Kids, quickly get through this exit, and keep moving in ________There is no need to panic,” said the teacher
| A．a calm manner | B．calm manners | C．calm manner | D．the calm manners |
Residents in the remote area have ________ about what the disease is all about, not to mention prevention and treatment
| A．a little knowledge | B．little knowledge | C．few knowledges | D．a few knowledges |
名词与其数和所有格及数词的表达
To become a qualified librarian, she first worked in a public library for a year to get ________ of the work
| A．firsthand experience | B．the firsthand experiences |
| C．a firsthand experience | D．firsthand experiences |