Question

[Nguyễn Ngọc Thảo Nguyên]

make passive sentences starting with THERE IS...... or THERE ARE using the reporting verb in brackets in the tense given, plus a standard or perfect infinitive of BE  as instructed, plus the phrase given

1. many species still undiscovered( think- present simple)- standard

2. considerable support for the idea ( understand- present simple)- standard 

3. any need to act immediately( not feel- past simple) - standard

4. enough supplies to go  round ( presume- past simple )- standard

5.a shortage of medicines ( report- past simple) perfect

6. several reasons for the failure( say- present simple)- perfect