Robert is said ______ abroad, but I don’t know which country he studied in.
#96019
A
to have studied
B
to study
C
to be studying
D
to have been studying
推荐题目
Upon ________ his studies, he started travelling in China. 
#90548
A
finish
B
finishing
C
he finished
D
finished
Nobody but doctors or nurses and those ________ by Dr Li ________ to enter the patient’s room.
#88751
A
being invited;allowed
B
are invited;are allowed
C
invited;is allowed
D
invited;are allowed