几个语法题,请说明原因,加分
1.Thepressure___causesAmericanstobeenergetic,butitalsoputsthemunderaconstantemotionalstrain.
Acompeting
Btocompete
2.Hewillagreetodowhatyourequire___him
ATO
BFOR
Cof
3.Theyaskedmetohaveadrinkwiththem.IsaidthatitwasatleasttenyearssinceI___agooddrink.
Ahadenjoyed
Bhavingbeenenjoying
Chaveenjoyed
为什么用过去完成时?
4.____evidencethatlanguage-acquiringabilitymustbestimulated.
AItbeing
BItis
CThereis
DTherebeing
请问BCD什么区别?
5.Thiscrophassimilarqualitiestothepreviousone,____bothwind-resistantandadaptedtothesametypeofsoil.
Abeing
Bbeen
Ctobe
Dhavingbeen
请告知详细原因,我会加很多分的