【单选题】
The engineers in this lab spent several weeks _______ their plans for the new bicycle.
①
counting
②
stripping
③
elaborating
④
casting
【单选题】
What role does a teacher play in the following activity? While doing a writing task either individually or in groups, the students need to use a particular word they don’t know. So they ask the teacher.
①
Controller
②
Assessor
③
participant
④
Resource-provider.
【单选题】
One of my ____ sentences is: there is no smoke without fire.
①
faithful
②
favorite
③
favorable
④
famous