A、watchedfor
B、waitedon
C、takenover
D、trifledwith
The book must ______ to the library
A、return
B、bereturned
C、tobereturned
D、toreturned
The first paragraph is intended to ________.
A、suggestthatself-medicationhasalonghistory
B、definewhatdiagnosismeansexactly
C、praisedoctorsfortheirexpertise
D、tellthesymptomsfromthecauses
As early as in the development of agriculture,men discovered how to make
alcoholic drinks from grapes and corn.
A、在农业发展的早期，人类就找到了用葡萄和玉米酿酒的方法。
B、早在农业发展时期，人类就发现了如何用葡萄和玉米来酿酒。
C、在农业发展的早期，人类就发现葡萄和玉米可用来酿酒。
D、早在农业刚刚发展之时，男人们就开始用葡萄和玉米来酿酒。
Imeant____youaboutit,butIforgottodoso.
A、telling
B、havingtold
C、totell
D、tohavetold