18. _________ the library for hours without finding anything useful, I turned to my professor for help.
A: To search
B: Having searched
C: Have searched
D: Searching
A: To search
B: Having searched
C: Have searched
D: Searching
B
举一反三
- ( )the library for hours without finding anything useful,I turned to my professor for help.
- The police （） for the thief everywhere when he suddenly appeared in a theatre. A: search B: have searched C: were searching D: are searching
- The police have _____ the area for about two days, but so far have found nothing. A: search B: searched C: searching D: searcher
- It is most desirable that she _____ for the information by herself with a few clicks online. A: search B: searched C: have searched D: will search
- Jane has already （）the Internet A: search B: searching C: searches D: searched
内容
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______ the website of the tourism, and you will learn something important about the places of interest. A: To search B: Searching C: Search D: Searched
- 1
22.______ the website of the tourism, and you will learn something important about the places of interest. A: To search B: Searching C: Search D: Searched
- 2
Every visitor will ________ at the entrance to the queen’s palace A: be searched B: be searched for C: search D: search for
- 3
Having searched online for hours, the team finally ____________ about the causes of the problem.
- 4
It is most desirable that he ______ for the information by himself with a few clicks online. A: search B: searched C: had searched D: will search