When Jack arrived _____the airport，he found it hard to look for a place to park his car．
A. in B. at C. on D. to
On no-car day, ______ students ______ teachers are allowed to drive to school.
A. either; or B. not only; but also C. neither; nor D. both; and
The nurse won't leave her patients ______she's sure they are all taken good care of．
A. unless B. because C. so D. if
These good words can touch not only your heart but also . Let's remember them .
A. I B. my C. myself D. mine
The Belt and Road Initiative(一带一路倡议) will help China improve ___with lots of countries.
A. relationship B. agreement C. environment D. progress
