I doubt _______ they can complete the bridge ahead of time.
B
这里表示的是：来的方式，要用how.
Thetwinsaresoalikethatitsalmost___(possible)totellthemapart.
Jane is restless; she is _____ an important phone call from her parents.
Theblackwriterwantedtheothermembersoftheworkshoptotreat_________asanequal.
The group is made up of local___(music)who have been performing together for several years.
The twins are so alike that its almost___ (possible)to tell them apart.