Tenses Gap Filling Worksheet For Class 9
Complete the given passage with an appropriate form of the verb. Choose your answers from the given options.
Class 9 Tenses Worksheet
What ……………………… (do / does / did) aliens watch on television? Whatever it be, broadcasting ………………………. (require / requires / required) the transmission of radio signals. Astronomers in Hat Creek, California …………………… (is / are / have) working on a giant new array of radio telescopes that they say ………………………. (will / can) be able to capture the radio signals ……………………….. (transmitting / transmitted / are transmitted) by aliens if anyone out there is busy broadcasting.
When the Allen Telescope Array as it ……………………….. (knows / known / is known) is complete, it will consist of 350 antennas, each 320 feet in diameter. Using the separate antennas as if they ……………………. (are / were / have been) one giant dish, radio astronomers will be able to map vast swaths of the sky cheaply and efficiently.
The telescope ………………………. (helps / will help / would help) search for new phenomena like black holes eating others and so-called dark galaxies without stars. It will also extend the search for extraterrestrial radio signals likely to be …………………………. (broadcast / broadcasting / broadcasted) by aliens. The full Allen array will be able to detect a signal from as far as 500 light years.
Answers
What do aliens watch on television? Whatever it be, broadcasting requires the transmission of radio signals. Astronomers in Hat Creek, California are working on a giant new array of radio telescopes that they say will be able to capture the radio signals transmitted by aliens if anyone out there is busy broadcasting.
When the Allen Telescope Array, as it is known, is complete, it will consist of 350 antennas, each 320 feet in diameter. Using the separate antennas as if they were one giant dish, radio astronomers will be able to map vast swaths of the sky cheaply and efficiently.
The telescope will help search for new phenomena like black holes eating others and so-called dark galaxies without stars. It will also extend the search for extraterrestrial radio signals likely to be broadcast by aliens. The full Allen array will be able to detect a signal from as far as 500 light years.
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