Yes, 'Have' is necessary. It is not actually two verbs, it's a single verb 'have lost'. Here it shows present perfect tense, 'lost' is the main verb in participle form and 'have' is auxiliary or helping verb.
Hope it is clear to you now.
0 voted
January 1, 2020
2
Commented
In India, inquiring about age seems uncomfortable to many persons. Also it is uncomfortable if I ask about one's salary.
Yes, staring is rude. People here gets offended if someone tells to eat less to obese persons.
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January 1, 2020
0
Commented
Yes, Transfuse is a <em>transitive </em>verb. Your sentence is correct.
0 voted
January 1, 2020
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Commented
Well I love games, but presently I am only playing mobile games such as Pes 2020 and Clash Royale. I have also played Fifa (PC), Project IGI, Wolfenstein, Call of Duty, Football manager, Tennis Manager and Counterstrike.
0 voted
January 1, 2020
0
Commented
I'm also interested in studying Japanese but not willing to spend much because it's not for any professional cause. If you have any other way, please contact me.