Scientific surveys conducted during the climbs ______that Mount Huandoy in Peru______ 6395 meters high
#104552
A
shown；is
B
showed；was
C
shows；was
D
showed；is
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Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.
#104738
A
has just left
B
had just left
C
just left
D
was just leaving
(2013·高考重庆卷)—It rained cats and dogs this morning.I’ m glad we took an umbrella.—Yeah，we would have got wet all over if we________.
#99716
A
hadn’t
B
haven’t
C
didn’t
D
don’t
---____ the paper ?--- No, I have still got one page to finish.
#103668
A
Have you done
B
Do you do
C
Did you do
D
Had you done
—Look! Somebody the sofa.—Well, it wasn’t me. I didn’t do it.
#101195
A
is cleaning
B
has cleaned
C
was cleaning
D
had cleaned
Although medical science________ control over several dangerous diseases, what worries us is that some of them are returning.
#101311
A
achieved
B
has achieved
C
will achieve
D
had achieved