I _______ to the museum.
A: am been
B: been
C: have been
A: am been
B: been
C: have been
举一反三
- I am tired. I ______ all day. A: am working B: have been working C: worked D: have been worked
- That was the second time I ____________(be) abroad. A: am B: was C: had been D: have been
- It is the third time that I () here. A: was B: am C: have been D: had been
- It is the first time that I ______ here. ( ) A: am B: have been C: had been D: was
- By the time I graduate, I _______ able to write English email. A: am B: will have been C: have been D: would have